[PATCH AUTOSEL 4.9 1/5] bus: sunxi-rsb: Return correct data when mixing 16-bit and 8-bit reads

[PATCH AUTOSEL 4.9 1/5] bus: sunxi-rsb: Return correct data when mixing 16-bit and 8-bit reads

[Sasha Levin]

From: Ondrej Jirman <megous@megous.com>

[ Upstream commit a43ab30dcd4a1abcdd0d2461bf1cf7c0817f6cd3 ]

When doing a 16-bit read that returns data in the MSB byte, the
RSB_DATA register will keep the MSB byte unchanged when doing
the following 8-bit read. sunxi_rsb_read() will then return
a result that contains high byte from 16-bit read mixed with
the 8-bit result.

The consequence is that after this happens the PMIC's regmap will
look like this: (0x33 is the high byte from the 16-bit read)

% cat /sys/kernel/debug/regmap/sunxi-rsb-3a3/registers
00: 33
01: 33
02: 33
03: 33
04: 33
05: 33
06: 33
07: 33
08: 33
09: 33
0a: 33
0b: 33
0c: 33
0d: 33
0e: 33
[snip]

Fix this by masking the result of the read with the correct mask
based on the size of the read. There are no 16-bit users in the
mainline kernel, so this doesn't need to get into the stable tree.

Signed-off-by: Ondrej Jirman <megous@megous.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/bus/sunxi-rsb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/bus/sunxi-rsb.c b/drivers/bus/sunxi-rsb.c
index 2051d926e3037..4f3d988210b0a 100644
--- a/drivers/bus/sunxi-rsb.c
+++ b/drivers/bus/sunxi-rsb.c
@@ -345,7 +345,7 @@ static int sunxi_rsb_read(struct sunxi_rsb *rsb, u8 rtaddr, u8 addr,
 	if (ret)
 		goto unlock;
 
-	*buf = readl(rsb->regs + RSB_DATA);
+	*buf = readl(rsb->regs + RSB_DATA) & GENMASK(len * 8 - 1, 0);
 
 unlock:
 	mutex_unlock(&rsb->lock);
-- 
2.20.1

[PATCH AUTOSEL 4.9 2/5] net: vxge: fix wrong __VA_ARGS__ usage

[Sasha Levin]

From: Zheng Wei <wei.zheng@vivo.com>

[ Upstream commit b317538c47943f9903860d83cc0060409e12d2ff ]

printk in macro vxge_debug_ll uses __VA_ARGS__ without "##" prefix,
it causes a build error when there is no variable
arguments(e.g. only fmt is specified.).

Signed-off-by: Zheng Wei <wei.zheng@vivo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/neterion/vxge/vxge-config.h |  2 +-
 drivers/net/ethernet/neterion/vxge/vxge-main.h   | 14 +++++++-------
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ethernet/neterion/vxge/vxge-config.h b/drivers/net/ethernet/neterion/vxge/vxge-config.h
index 6ce4412fcc1ad..380e841fdd957 100644
--- a/drivers/net/ethernet/neterion/vxge/vxge-config.h
+++ b/drivers/net/ethernet/neterion/vxge/vxge-config.h
@@ -2065,7 +2065,7 @@ vxge_hw_vpath_strip_fcs_check(struct __vxge_hw_device *hldev, u64 vpath_mask);
 	if ((level >= VXGE_ERR && VXGE_COMPONENT_LL & VXGE_DEBUG_ERR_MASK) ||  \
 	    (level >= VXGE_TRACE && VXGE_COMPONENT_LL & VXGE_DEBUG_TRACE_MASK))\
 		if ((mask & VXGE_DEBUG_MASK) == mask)			       \
-			printk(fmt "\n", __VA_ARGS__);			       \
+			printk(fmt "\n", ##__VA_ARGS__);		       \
 } while (0)
 #else
 #define vxge_debug_ll(level, mask, fmt, ...)
diff --git a/drivers/net/ethernet/neterion/vxge/vxge-main.h b/drivers/net/ethernet/neterion/vxge/vxge-main.h
index 3a79d93b84453..5b535aa10d23e 100644
--- a/drivers/net/ethernet/neterion/vxge/vxge-main.h
+++ b/drivers/net/ethernet/neterion/vxge/vxge-main.h
@@ -454,49 +454,49 @@ int vxge_fw_upgrade(struct vxgedev *vdev, char *fw_name, int override);
 
 #if (VXGE_DEBUG_LL_CONFIG & VXGE_DEBUG_MASK)
 #define vxge_debug_ll_config(level, fmt, ...) \
-	vxge_debug_ll(level, VXGE_DEBUG_LL_CONFIG, fmt, __VA_ARGS__)
+	vxge_debug_ll(level, VXGE_DEBUG_LL_CONFIG, fmt, ##__VA_ARGS__)
 #else
 #define vxge_debug_ll_config(level, fmt, ...)
 #endif
 
 #if (VXGE_DEBUG_INIT & VXGE_DEBUG_MASK)
 #define vxge_debug_init(level, fmt, ...) \
-	vxge_debug_ll(level, VXGE_DEBUG_INIT, fmt, __VA_ARGS__)
+	vxge_debug_ll(level, VXGE_DEBUG_INIT, fmt, ##__VA_ARGS__)
 #else
 #define vxge_debug_init(level, fmt, ...)
 #endif
 
 #if (VXGE_DEBUG_TX & VXGE_DEBUG_MASK)
 #define vxge_debug_tx(level, fmt, ...) \
-	vxge_debug_ll(level, VXGE_DEBUG_TX, fmt, __VA_ARGS__)
+	vxge_debug_ll(level, VXGE_DEBUG_TX, fmt, ##__VA_ARGS__)
 #else
 #define vxge_debug_tx(level, fmt, ...)
 #endif
 
 #if (VXGE_DEBUG_RX & VXGE_DEBUG_MASK)
 #define vxge_debug_rx(level, fmt, ...) \
-	vxge_debug_ll(level, VXGE_DEBUG_RX, fmt, __VA_ARGS__)
+	vxge_debug_ll(level, VXGE_DEBUG_RX, fmt, ##__VA_ARGS__)
 #else
 #define vxge_debug_rx(level, fmt, ...)
 #endif
 
 #if (VXGE_DEBUG_MEM & VXGE_DEBUG_MASK)
 #define vxge_debug_mem(level, fmt, ...) \
-	vxge_debug_ll(level, VXGE_DEBUG_MEM, fmt, __VA_ARGS__)
+	vxge_debug_ll(level, VXGE_DEBUG_MEM, fmt, ##__VA_ARGS__)
 #else
 #define vxge_debug_mem(level, fmt, ...)
 #endif
 
 #if (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK)
 #define vxge_debug_entryexit(level, fmt, ...) \
-	vxge_debug_ll(level, VXGE_DEBUG_ENTRYEXIT, fmt, __VA_ARGS__)
+	vxge_debug_ll(level, VXGE_DEBUG_ENTRYEXIT, fmt, ##__VA_ARGS__)
 #else
 #define vxge_debug_entryexit(level, fmt, ...)
 #endif
 
 #if (VXGE_DEBUG_INTR & VXGE_DEBUG_MASK)
 #define vxge_debug_intr(level, fmt, ...) \
-	vxge_debug_ll(level, VXGE_DEBUG_INTR, fmt, __VA_ARGS__)
+	vxge_debug_ll(level, VXGE_DEBUG_INTR, fmt, ##__VA_ARGS__)
 #else
 #define vxge_debug_intr(level, fmt, ...)
 #endif
-- 
2.20.1

[PATCH AUTOSEL 4.9 3/5] netfilter: nf_tables: Allow set back-ends to report partial overlaps on insertion

[Sasha Levin]

From: Pablo Neira Ayuso <pablo@netfilter.org>

[ Upstream commit 8c2d45b2b65ca1f215244be1c600236e83f9815f ]

Currently, the -EEXIST return code of ->insert() callbacks is ambiguous: it
might indicate that a given element (including intervals) already exists as
such, or that the new element would clash with existing ones.

If identical elements already exist, the front-end is ignoring this without
returning error, in case NLM_F_EXCL is not set. However, if the new element
can't be inserted due an overlap, we should report this to the user.

To this purpose, allow set back-ends to return -ENOTEMPTY on collision with
existing elements, translate that to -EEXIST, and return that to userspace,
no matter if NLM_F_EXCL was set.

Reported-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/netfilter/nf_tables_api.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 2fa1c4f2e94e0..d9b448ed9a47c 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -3642,6 +3642,11 @@ static int nft_add_set_elem(struct nft_ctx *ctx, struct nft_set *set,
 				err = -EBUSY;
 			else if (!(nlmsg_flags & NLM_F_EXCL))
 				err = 0;
+		} else if (err == -ENOTEMPTY) {
+			/* ENOTEMPTY reports overlapping between this element
+			 * and an existing one.
+			 */
+			err = -EEXIST;
 		}
 		goto err5;
 	}
-- 
2.20.1

[PATCH AUTOSEL 4.9 4/5] qlcnic: Fix bad kzalloc null test

[Sasha Levin]

From: Xu Wang <vulab@iscas.ac.cn>

[ Upstream commit bcaeb886ade124331a6f3a5cef34a3f1484c0a03 ]

In qlcnic_83xx_get_reset_instruction_template, the variable
of null test is bad, so correct it.

Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c
index 07f9067affc65..cda5b0a9e9489 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c
@@ -1720,7 +1720,7 @@ static int qlcnic_83xx_get_reset_instruction_template(struct qlcnic_adapter *p_d
 
 	ahw->reset.seq_error = 0;
 	ahw->reset.buff = kzalloc(QLC_83XX_RESTART_TEMPLATE_SIZE, GFP_KERNEL);
-	if (p_dev->ahw->reset.buff == NULL)
+	if (ahw->reset.buff == NULL)
 		return -ENOMEM;
 
 	p_buff = p_dev->ahw->reset.buff;
-- 
2.20.1

[PATCH AUTOSEL 4.9 5/5] i2c: st: fix missing struct parameter description

[Sasha Levin]

From: Alain Volmat <avolmat@me.com>

[ Upstream commit f491c6687332920e296d0209e366fe2ca7eab1c6 ]

Fix a missing struct parameter description to allow
warning free W=1 compilation.

Signed-off-by: Alain Volmat <avolmat@me.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/i2c/busses/i2c-st.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/i2c/busses/i2c-st.c b/drivers/i2c/busses/i2c-st.c
index 1371547ce1a3a..185653b8ec3a2 100644
--- a/drivers/i2c/busses/i2c-st.c
+++ b/drivers/i2c/busses/i2c-st.c
@@ -437,6 +437,7 @@ static void st_i2c_wr_fill_tx_fifo(struct st_i2c_dev *i2c_dev)
 /**
  * st_i2c_rd_fill_tx_fifo() - Fill the Tx FIFO in read mode
  * @i2c_dev: Controller's private data
+ * @max: Maximum amount of data to fill into the Tx FIFO
  *
  * This functions fills the Tx FIFO with fixed pattern when
  * in read mode to trigger clock.
-- 
2.20.1