* [linux-next:master 7089/10661] drivers/net/phy/micrel.c:2729:26: warning: Value stored to 'ptp_priv' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
@ 2022-05-10 16:48 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2022-05-10 16:48 UTC (permalink / raw)
To: kbuild
[-- Attachment #1: Type: text/plain, Size: 26832 bytes --]
CC: llvm(a)lists.linux.dev
CC: kbuild-all(a)lists.01.org
BCC: lkp(a)intel.com
CC: Linux Memory Management List <linux-mm@kvack.org>
TO: Michael Walle <michael@walle.cc>
CC: Jakub Kicinski <kuba@kernel.org>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: 3bf222d317a20170ee17f082626c1e0f83537e13
commit: 31d00ca4ce0e1abf5342854606bbe7d20e38c3f8 [7089/10661] net: phy: micrel: move the PHY timestamping check
:::::: branch date: 4 hours ago
:::::: commit date: 11 days ago
config: x86_64-randconfig-c007 (https://download.01.org/0day-ci/archive/20220511/202205110011.avESLaxB-lkp(a)intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 5e004fb787698440a387750db7f8028e7cb14cfc)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=31d00ca4ce0e1abf5342854606bbe7d20e38c3f8
git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
git fetch --no-tags linux-next master
git checkout 31d00ca4ce0e1abf5342854606bbe7d20e38c3f8
# save the config file
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 clang-analyzer
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
clang-analyzer warnings: (new ones prefixed by >>)
74 warnings generated.
drivers/net/phy/icplus.c:107:3: warning: Value stored to 'err' is never read [clang-analyzer-deadcode.DeadStores]
err = mdiobus_read(phydev->mdio.bus, 30, 0);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/phy/icplus.c:107:3: note: Value stored to 'err' is never read
err = mdiobus_read(phydev->mdio.bus, 30, 0);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/phy/icplus.c:131:4: warning: Value stored to 'err' is never read [clang-analyzer-deadcode.DeadStores]
err = mdiobus_read(phydev->mdio.bus, i, MII_BMCR);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/phy/icplus.c:131:4: note: Value stored to 'err' is never read
err = mdiobus_read(phydev->mdio.bus, i, MII_BMCR);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Suppressed 72 warnings (72 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
72 warnings generated.
Suppressed 72 warnings (72 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
70 warnings generated.
Suppressed 70 warnings (70 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
77 warnings generated.
drivers/net/phy/micrel.c:1280:2: warning: Value stored to 'regval' is never read [clang-analyzer-deadcode.DeadStores]
regval = phy_read(phydev, KSZ8873MLL_GLOBAL_CONTROL_4);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/phy/micrel.c:1280:2: note: Value stored to 'regval' is never read
regval = phy_read(phydev, KSZ8873MLL_GLOBAL_CONTROL_4);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/phy/micrel.c:2222:3: warning: Call to function 'memset' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memset_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling]
memset(shhwtstamps, 0, sizeof(*shhwtstamps));
^
include/linux/fortify-string.h:272:25: note: expanded from macro 'memset'
#define memset(p, c, s) __fortify_memset_chk(p, c, s, \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/fortify-string.h:265:2: note: expanded from macro '__fortify_memset_chk'
__underlying_memset(p, c, __fortify_size); \
^~~~~~~~~~~~~~~~~~~
include/linux/fortify-string.h:47:29: note: expanded from macro '__underlying_memset'
#define __underlying_memset __builtin_memset
^~~~~~~~~~~~~~~~
drivers/net/phy/micrel.c:2222:3: note: Call to function 'memset' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memset_s' in case of C11
memset(shhwtstamps, 0, sizeof(*shhwtstamps));
^
include/linux/fortify-string.h:272:25: note: expanded from macro 'memset'
#define memset(p, c, s) __fortify_memset_chk(p, c, s, \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/fortify-string.h:265:2: note: expanded from macro '__fortify_memset_chk'
__underlying_memset(p, c, __fortify_size); \
^~~~~~~~~~~~~~~~~~~
include/linux/fortify-string.h:47:29: note: expanded from macro '__underlying_memset'
#define __underlying_memset __builtin_memset
^~~~~~~~~~~~~~~~
drivers/net/phy/micrel.c:2530:3: warning: Call to function 'memset' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memset_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling]
memset(&shhwtstamps, 0, sizeof(shhwtstamps));
^
include/linux/fortify-string.h:272:25: note: expanded from macro 'memset'
#define memset(p, c, s) __fortify_memset_chk(p, c, s, \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/fortify-string.h:265:2: note: expanded from macro '__fortify_memset_chk'
__underlying_memset(p, c, __fortify_size); \
^~~~~~~~~~~~~~~~~~~
include/linux/fortify-string.h:47:29: note: expanded from macro '__underlying_memset'
#define __underlying_memset __builtin_memset
^~~~~~~~~~~~~~~~
drivers/net/phy/micrel.c:2530:3: note: Call to function 'memset' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memset_s' in case of C11
memset(&shhwtstamps, 0, sizeof(shhwtstamps));
^
include/linux/fortify-string.h:272:25: note: expanded from macro 'memset'
#define memset(p, c, s) __fortify_memset_chk(p, c, s, \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/fortify-string.h:265:2: note: expanded from macro '__fortify_memset_chk'
__underlying_memset(p, c, __fortify_size); \
^~~~~~~~~~~~~~~~~~~
include/linux/fortify-string.h:47:29: note: expanded from macro '__underlying_memset'
#define __underlying_memset __builtin_memset
^~~~~~~~~~~~~~~~
drivers/net/phy/micrel.c:2576:3: warning: Call to function 'memset' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memset_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling]
memset(shhwtstamps, 0, sizeof(*shhwtstamps));
^
include/linux/fortify-string.h:272:25: note: expanded from macro 'memset'
#define memset(p, c, s) __fortify_memset_chk(p, c, s, \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/fortify-string.h:265:2: note: expanded from macro '__fortify_memset_chk'
__underlying_memset(p, c, __fortify_size); \
^~~~~~~~~~~~~~~~~~~
include/linux/fortify-string.h:47:29: note: expanded from macro '__underlying_memset'
#define __underlying_memset __builtin_memset
^~~~~~~~~~~~~~~~
drivers/net/phy/micrel.c:2576:3: note: Call to function 'memset' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memset_s' in case of C11
memset(shhwtstamps, 0, sizeof(*shhwtstamps));
^
include/linux/fortify-string.h:272:25: note: expanded from macro 'memset'
#define memset(p, c, s) __fortify_memset_chk(p, c, s, \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/fortify-string.h:265:2: note: expanded from macro '__fortify_memset_chk'
__underlying_memset(p, c, __fortify_size); \
^~~~~~~~~~~~~~~~~~~
include/linux/fortify-string.h:47:29: note: expanded from macro '__underlying_memset'
#define __underlying_memset __builtin_memset
^~~~~~~~~~~~~~~~
>> drivers/net/phy/micrel.c:2729:26: warning: Value stored to 'ptp_priv' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct kszphy_ptp_priv *ptp_priv = &priv->ptp_priv;
^~~~~~~~ ~~~~~~~~~~~~~~~
drivers/net/phy/micrel.c:2729:26: note: Value stored to 'ptp_priv' during its initialization is never read
struct kszphy_ptp_priv *ptp_priv = &priv->ptp_priv;
^~~~~~~~ ~~~~~~~~~~~~~~~
>> drivers/net/phy/micrel.c:2772:30: warning: Value stored to 'shared' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct lan8814_shared_priv *shared = phydev->shared->priv;
^~~~~~ ~~~~~~~~~~~~~~~~~~~~
drivers/net/phy/micrel.c:2772:30: note: Value stored to 'shared' during its initialization is never read
struct lan8814_shared_priv *shared = phydev->shared->priv;
^~~~~~ ~~~~~~~~~~~~~~~~~~~~
drivers/net/phy/micrel.c:2782:2: warning: Call to function 'snprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'snprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling]
snprintf(shared->ptp_clock_info.name, 30, "%s", phydev->drv->name);
^~~~~~~~
drivers/net/phy/micrel.c:2782:2: note: Call to function 'snprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'snprintf_s' in case of C11
snprintf(shared->ptp_clock_info.name, 30, "%s", phydev->drv->name);
^~~~~~~~
Suppressed 70 warnings (70 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
45 warnings generated.
Suppressed 45 warnings (45 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
45 warnings generated.
Suppressed 45 warnings (45 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
45 warnings generated.
Suppressed 45 warnings (45 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
51 warnings generated.
fs/ext4/balloc.c:198:2: warning: Call to function 'memset' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memset_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling]
memset(bh->b_data, 0, sb->s_blocksize);
^
include/linux/fortify-string.h:272:25: note: expanded from macro 'memset'
#define memset(p, c, s) __fortify_memset_chk(p, c, s, \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/fortify-string.h:265:2: note: expanded from macro '__fortify_memset_chk'
__underlying_memset(p, c, __fortify_size); \
^~~~~~~~~~~~~~~~~~~
include/linux/fortify-string.h:47:29: note: expanded from macro '__underlying_memset'
#define __underlying_memset __builtin_memset
^~~~~~~~~~~~~~~~
fs/ext4/balloc.c:198:2: note: Call to function 'memset' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memset_s' in case of C11
memset(bh->b_data, 0, sb->s_blocksize);
^
include/linux/fortify-string.h:272:25: note: expanded from macro 'memset'
#define memset(p, c, s) __fortify_memset_chk(p, c, s, \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/fortify-string.h:265:2: note: expanded from macro '__fortify_memset_chk'
__underlying_memset(p, c, __fortify_size); \
^~~~~~~~~~~~~~~~~~~
include/linux/fortify-string.h:47:29: note: expanded from macro '__underlying_memset'
#define __underlying_memset __builtin_memset
^~~~~~~~~~~~~~~~
fs/ext4/balloc.c:693:2: warning: Call to function 'memset' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memset_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling]
memset(&ar, 0, sizeof(ar));
^
include/linux/fortify-string.h:272:25: note: expanded from macro 'memset'
#define memset(p, c, s) __fortify_memset_chk(p, c, s, \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/fortify-string.h:265:2: note: expanded from macro '__fortify_memset_chk'
__underlying_memset(p, c, __fortify_size); \
^~~~~~~~~~~~~~~~~~~
include/linux/fortify-string.h:47:29: note: expanded from macro '__underlying_memset'
#define __underlying_memset __builtin_memset
^~~~~~~~~~~~~~~~
fs/ext4/balloc.c:693:2: note: Call to function 'memset' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memset_s' in case of C11
memset(&ar, 0, sizeof(ar));
^
include/linux/fortify-string.h:272:25: note: expanded from macro 'memset'
#define memset(p, c, s) __fortify_memset_chk(p, c, s, \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/fortify-string.h:265:2: note: expanded from macro '__fortify_memset_chk'
__underlying_memset(p, c, __fortify_size); \
^~~~~~~~~~~~~~~~~~~
include/linux/fortify-string.h:47:29: note: expanded from macro '__underlying_memset'
#define __underlying_memset __builtin_memset
^~~~~~~~~~~~~~~~
Suppressed 49 warnings (49 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
87 warnings generated.
drivers/net/wireless/marvell/libertas_tf/cmd.c:49:2: warning: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling]
memcpy(buf, resp, copy_len);
^
include/linux/fortify-string.h:369:26: note: expanded from macro 'memcpy'
#define memcpy(p, q, s) __fortify_memcpy_chk(p, q, s, \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/fortify-string.h:362:2: note: expanded from macro '__fortify_memcpy_chk'
__underlying_##op(p, q, __fortify_size); \
^~~~~~~~~~~~~~~~~
note: expanded from here
include/linux/fortify-string.h:45:29: note: expanded from macro '__underlying_memcpy'
#define __underlying_memcpy __builtin_memcpy
^~~~~~~~~~~~~~~~
drivers/net/wireless/marvell/libertas_tf/cmd.c:49:2: note: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11
memcpy(buf, resp, copy_len);
^
include/linux/fortify-string.h:369:26: note: expanded from macro 'memcpy'
#define memcpy(p, q, s) __fortify_memcpy_chk(p, q, s, \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/fortify-string.h:362:2: note: expanded from macro '__fortify_memcpy_chk'
__underlying_##op(p, q, __fortify_size); \
^~~~~~~~~~~~~~~~~
note: expanded from here
include/linux/fortify-string.h:45:29: note: expanded from macro '__underlying_memcpy'
#define __underlying_memcpy __builtin_memcpy
^~~~~~~~~~~~~~~~
vim +/ptp_priv +2729 drivers/net/phy/micrel.c
b3ec7248f1f4b9 Divya Koppera 2021-12-21 2725
ece19502834d84 Divya Koppera 2022-03-04 2726 static void lan8814_ptp_init(struct phy_device *phydev)
ece19502834d84 Divya Koppera 2022-03-04 2727 {
ece19502834d84 Divya Koppera 2022-03-04 2728 struct kszphy_priv *priv = phydev->priv;
ece19502834d84 Divya Koppera 2022-03-04 @2729 struct kszphy_ptp_priv *ptp_priv = &priv->ptp_priv;
ece19502834d84 Divya Koppera 2022-03-04 2730 u32 temp;
ece19502834d84 Divya Koppera 2022-03-04 2731
31d00ca4ce0e1a Michael Walle 2022-04-27 2732 if (!IS_ENABLED(CONFIG_PTP_1588_CLOCK) ||
31d00ca4ce0e1a Michael Walle 2022-04-27 2733 !IS_ENABLED(CONFIG_NETWORK_PHY_TIMESTAMPING))
31d00ca4ce0e1a Michael Walle 2022-04-27 2734 return;
31d00ca4ce0e1a Michael Walle 2022-04-27 2735
ece19502834d84 Divya Koppera 2022-03-04 2736 lanphy_write_page_reg(phydev, 5, TSU_HARD_RESET, TSU_HARD_RESET_);
ece19502834d84 Divya Koppera 2022-03-04 2737
ece19502834d84 Divya Koppera 2022-03-04 2738 temp = lanphy_read_page_reg(phydev, 5, PTP_TX_MOD);
ece19502834d84 Divya Koppera 2022-03-04 2739 temp |= PTP_TX_MOD_BAD_UDPV4_CHKSUM_FORCE_FCS_DIS_;
ece19502834d84 Divya Koppera 2022-03-04 2740 lanphy_write_page_reg(phydev, 5, PTP_TX_MOD, temp);
ece19502834d84 Divya Koppera 2022-03-04 2741
ece19502834d84 Divya Koppera 2022-03-04 2742 temp = lanphy_read_page_reg(phydev, 5, PTP_RX_MOD);
ece19502834d84 Divya Koppera 2022-03-04 2743 temp |= PTP_RX_MOD_BAD_UDPV4_CHKSUM_FORCE_FCS_DIS_;
ece19502834d84 Divya Koppera 2022-03-04 2744 lanphy_write_page_reg(phydev, 5, PTP_RX_MOD, temp);
ece19502834d84 Divya Koppera 2022-03-04 2745
ece19502834d84 Divya Koppera 2022-03-04 2746 lanphy_write_page_reg(phydev, 5, PTP_RX_PARSE_CONFIG, 0);
ece19502834d84 Divya Koppera 2022-03-04 2747 lanphy_write_page_reg(phydev, 5, PTP_TX_PARSE_CONFIG, 0);
ece19502834d84 Divya Koppera 2022-03-04 2748
ece19502834d84 Divya Koppera 2022-03-04 2749 /* Removing default registers configs related to L2 and IP */
ece19502834d84 Divya Koppera 2022-03-04 2750 lanphy_write_page_reg(phydev, 5, PTP_TX_PARSE_L2_ADDR_EN, 0);
ece19502834d84 Divya Koppera 2022-03-04 2751 lanphy_write_page_reg(phydev, 5, PTP_RX_PARSE_L2_ADDR_EN, 0);
ece19502834d84 Divya Koppera 2022-03-04 2752 lanphy_write_page_reg(phydev, 5, PTP_TX_PARSE_IP_ADDR_EN, 0);
ece19502834d84 Divya Koppera 2022-03-04 2753 lanphy_write_page_reg(phydev, 5, PTP_RX_PARSE_IP_ADDR_EN, 0);
ece19502834d84 Divya Koppera 2022-03-04 2754
ece19502834d84 Divya Koppera 2022-03-04 2755 skb_queue_head_init(&ptp_priv->tx_queue);
ece19502834d84 Divya Koppera 2022-03-04 2756 skb_queue_head_init(&ptp_priv->rx_queue);
ece19502834d84 Divya Koppera 2022-03-04 2757 INIT_LIST_HEAD(&ptp_priv->rx_ts_list);
ece19502834d84 Divya Koppera 2022-03-04 2758 spin_lock_init(&ptp_priv->rx_ts_lock);
ece19502834d84 Divya Koppera 2022-03-04 2759
ece19502834d84 Divya Koppera 2022-03-04 2760 ptp_priv->phydev = phydev;
ece19502834d84 Divya Koppera 2022-03-04 2761
ece19502834d84 Divya Koppera 2022-03-04 2762 ptp_priv->mii_ts.rxtstamp = lan8814_rxtstamp;
ece19502834d84 Divya Koppera 2022-03-04 2763 ptp_priv->mii_ts.txtstamp = lan8814_txtstamp;
ece19502834d84 Divya Koppera 2022-03-04 2764 ptp_priv->mii_ts.hwtstamp = lan8814_hwtstamp;
ece19502834d84 Divya Koppera 2022-03-04 2765 ptp_priv->mii_ts.ts_info = lan8814_ts_info;
ece19502834d84 Divya Koppera 2022-03-04 2766
ece19502834d84 Divya Koppera 2022-03-04 2767 phydev->mii_ts = &ptp_priv->mii_ts;
ece19502834d84 Divya Koppera 2022-03-04 2768 }
ece19502834d84 Divya Koppera 2022-03-04 2769
ece19502834d84 Divya Koppera 2022-03-04 2770 static int lan8814_ptp_probe_once(struct phy_device *phydev)
ece19502834d84 Divya Koppera 2022-03-04 2771 {
ece19502834d84 Divya Koppera 2022-03-04 @2772 struct lan8814_shared_priv *shared = phydev->shared->priv;
ece19502834d84 Divya Koppera 2022-03-04 2773
31d00ca4ce0e1a Michael Walle 2022-04-27 2774 if (!IS_ENABLED(CONFIG_PTP_1588_CLOCK) ||
31d00ca4ce0e1a Michael Walle 2022-04-27 2775 !IS_ENABLED(CONFIG_NETWORK_PHY_TIMESTAMPING))
31d00ca4ce0e1a Michael Walle 2022-04-27 2776 return 0;
31d00ca4ce0e1a Michael Walle 2022-04-27 2777
ece19502834d84 Divya Koppera 2022-03-04 2778 /* Initialise shared lock for clock*/
ece19502834d84 Divya Koppera 2022-03-04 2779 mutex_init(&shared->shared_lock);
ece19502834d84 Divya Koppera 2022-03-04 2780
ece19502834d84 Divya Koppera 2022-03-04 2781 shared->ptp_clock_info.owner = THIS_MODULE;
ece19502834d84 Divya Koppera 2022-03-04 2782 snprintf(shared->ptp_clock_info.name, 30, "%s", phydev->drv->name);
ece19502834d84 Divya Koppera 2022-03-04 2783 shared->ptp_clock_info.max_adj = 31249999;
ece19502834d84 Divya Koppera 2022-03-04 2784 shared->ptp_clock_info.n_alarm = 0;
ece19502834d84 Divya Koppera 2022-03-04 2785 shared->ptp_clock_info.n_ext_ts = 0;
ece19502834d84 Divya Koppera 2022-03-04 2786 shared->ptp_clock_info.n_pins = 0;
ece19502834d84 Divya Koppera 2022-03-04 2787 shared->ptp_clock_info.pps = 0;
ece19502834d84 Divya Koppera 2022-03-04 2788 shared->ptp_clock_info.pin_config = NULL;
ece19502834d84 Divya Koppera 2022-03-04 2789 shared->ptp_clock_info.adjfine = lan8814_ptpci_adjfine;
ece19502834d84 Divya Koppera 2022-03-04 2790 shared->ptp_clock_info.adjtime = lan8814_ptpci_adjtime;
ece19502834d84 Divya Koppera 2022-03-04 2791 shared->ptp_clock_info.gettime64 = lan8814_ptpci_gettime64;
ece19502834d84 Divya Koppera 2022-03-04 2792 shared->ptp_clock_info.settime64 = lan8814_ptpci_settime64;
ece19502834d84 Divya Koppera 2022-03-04 2793 shared->ptp_clock_info.getcrosststamp = NULL;
ece19502834d84 Divya Koppera 2022-03-04 2794
ece19502834d84 Divya Koppera 2022-03-04 2795 shared->ptp_clock = ptp_clock_register(&shared->ptp_clock_info,
ece19502834d84 Divya Koppera 2022-03-04 2796 &phydev->mdio.dev);
ece19502834d84 Divya Koppera 2022-03-04 2797 if (IS_ERR_OR_NULL(shared->ptp_clock)) {
ece19502834d84 Divya Koppera 2022-03-04 2798 phydev_err(phydev, "ptp_clock_register failed %lu\n",
ece19502834d84 Divya Koppera 2022-03-04 2799 PTR_ERR(shared->ptp_clock));
ece19502834d84 Divya Koppera 2022-03-04 2800 return -EINVAL;
ece19502834d84 Divya Koppera 2022-03-04 2801 }
ece19502834d84 Divya Koppera 2022-03-04 2802
ece19502834d84 Divya Koppera 2022-03-04 2803 phydev_dbg(phydev, "successfully registered ptp clock\n");
ece19502834d84 Divya Koppera 2022-03-04 2804
ece19502834d84 Divya Koppera 2022-03-04 2805 shared->phydev = phydev;
ece19502834d84 Divya Koppera 2022-03-04 2806
ece19502834d84 Divya Koppera 2022-03-04 2807 /* The EP.4 is shared between all the PHYs in the package and also it
ece19502834d84 Divya Koppera 2022-03-04 2808 * can be accessed by any of the PHYs
ece19502834d84 Divya Koppera 2022-03-04 2809 */
ece19502834d84 Divya Koppera 2022-03-04 2810 lanphy_write_page_reg(phydev, 4, LTC_HARD_RESET, LTC_HARD_RESET_);
ece19502834d84 Divya Koppera 2022-03-04 2811 lanphy_write_page_reg(phydev, 4, PTP_OPERATING_MODE,
ece19502834d84 Divya Koppera 2022-03-04 2812 PTP_OPERATING_MODE_STANDALONE_);
ece19502834d84 Divya Koppera 2022-03-04 2813
ece19502834d84 Divya Koppera 2022-03-04 2814 return 0;
ece19502834d84 Divya Koppera 2022-03-04 2815 }
ece19502834d84 Divya Koppera 2022-03-04 2816
:::::: The code at line 2729 was first introduced by commit
:::::: ece19502834d84ece2e056db28257ca2aa6e4d48 net: phy: micrel: 1588 support for LAN8814 phy
:::::: TO: Divya Koppera <Divya.Koppera@microchip.com>
:::::: CC: David S. Miller <davem@davemloft.net>
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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2022-05-10 16:48 [linux-next:master 7089/10661] drivers/net/phy/micrel.c:2729:26: warning: Value stored to 'ptp_priv' during its initialization is never read [clang-analyzer-deadcode.DeadStores] kernel test robot
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