* [PATCH AUTOSEL 5.10 2/4] ieee802154/adf7242: Add MODULE_FIRMWARE macro
2023-06-29 19:02 [PATCH AUTOSEL 5.10 1/4] arm64: dts: rockchip: fix USB regulator on ROCK64 Sasha Levin
@ 2023-06-29 19:02 ` Sasha Levin
2023-06-29 19:02 ` [PATCH AUTOSEL 5.10 3/4] nfc: fdp: Add MODULE_FIRMWARE macros Sasha Levin
2023-06-29 19:02 ` [PATCH AUTOSEL 5.10 4/4] workqueue: clean up WORK_* constant types, clarify masking Sasha Levin
2 siblings, 0 replies; 4+ messages in thread
From: Sasha Levin @ 2023-06-29 19:02 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Juerg Haefliger, David S . Miller, Sasha Levin, michael.hennerich,
alex.aring, stefan, miquel.raynal, edumazet, kuba, pabeni,
linux-wpan, netdev
From: Juerg Haefliger <juerg.haefliger@canonical.com>
[ Upstream commit f593a94b530aee4c7f2511c9e48eb495dff03991 ]
The module loads firmware so add a MODULE_FIRMWARE macro to provide that
information via modinfo.
Signed-off-by: Juerg Haefliger <juerg.haefliger@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ieee802154/adf7242.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/ieee802154/adf7242.c b/drivers/net/ieee802154/adf7242.c
index 07adbeec19787..7140573eca72b 100644
--- a/drivers/net/ieee802154/adf7242.c
+++ b/drivers/net/ieee802154/adf7242.c
@@ -1351,3 +1351,5 @@ module_spi_driver(adf7242_driver);
MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
MODULE_DESCRIPTION("ADF7242 IEEE802.15.4 Transceiver Driver");
MODULE_LICENSE("GPL");
+
+MODULE_FIRMWARE(FIRMWARE);
--
2.39.2
^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH AUTOSEL 5.10 3/4] nfc: fdp: Add MODULE_FIRMWARE macros
2023-06-29 19:02 [PATCH AUTOSEL 5.10 1/4] arm64: dts: rockchip: fix USB regulator on ROCK64 Sasha Levin
2023-06-29 19:02 ` [PATCH AUTOSEL 5.10 2/4] ieee802154/adf7242: Add MODULE_FIRMWARE macro Sasha Levin
@ 2023-06-29 19:02 ` Sasha Levin
2023-06-29 19:02 ` [PATCH AUTOSEL 5.10 4/4] workqueue: clean up WORK_* constant types, clarify masking Sasha Levin
2 siblings, 0 replies; 4+ messages in thread
From: Sasha Levin @ 2023-06-29 19:02 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Juerg Haefliger, Krzysztof Kozlowski, David S . Miller,
Sasha Levin, shangxiaojing, netdev
From: Juerg Haefliger <juerg.haefliger@canonical.com>
[ Upstream commit eb09fc2d14163c0c217846cfabec3d0cce7c8f8c ]
The module loads firmware so add MODULE_FIRMWARE macros to provide that
information via modinfo.
Signed-off-by: Juerg Haefliger <juerg.haefliger@canonical.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/nfc/fdp/fdp.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/nfc/fdp/fdp.c b/drivers/nfc/fdp/fdp.c
index 90bea6a1db692..e2162f02f2d46 100644
--- a/drivers/nfc/fdp/fdp.c
+++ b/drivers/nfc/fdp/fdp.c
@@ -776,3 +776,6 @@ EXPORT_SYMBOL(fdp_nci_remove);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("NFC NCI driver for Intel Fields Peak NFC controller");
MODULE_AUTHOR("Robert Dolca <robert.dolca@intel.com>");
+
+MODULE_FIRMWARE(FDP_OTP_PATCH_NAME);
+MODULE_FIRMWARE(FDP_RAM_PATCH_NAME);
--
2.39.2
^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH AUTOSEL 5.10 4/4] workqueue: clean up WORK_* constant types, clarify masking
2023-06-29 19:02 [PATCH AUTOSEL 5.10 1/4] arm64: dts: rockchip: fix USB regulator on ROCK64 Sasha Levin
2023-06-29 19:02 ` [PATCH AUTOSEL 5.10 2/4] ieee802154/adf7242: Add MODULE_FIRMWARE macro Sasha Levin
2023-06-29 19:02 ` [PATCH AUTOSEL 5.10 3/4] nfc: fdp: Add MODULE_FIRMWARE macros Sasha Levin
@ 2023-06-29 19:02 ` Sasha Levin
2 siblings, 0 replies; 4+ messages in thread
From: Sasha Levin @ 2023-06-29 19:02 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Linus Torvalds, Dave Airlie, Arnd Bergmann, Tejun Heo,
Nick Desaulniers, Nathan Chancellor, Sasha Levin, llvm
From: Linus Torvalds <torvalds@linux-foundation.org>
[ Upstream commit afa4bb778e48d79e4a642ed41e3b4e0de7489a6c ]
Dave Airlie reports that gcc-13.1.1 has started complaining about some
of the workqueue code in 32-bit arm builds:
kernel/workqueue.c: In function ‘get_work_pwq’:
kernel/workqueue.c:713:24: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
713 | return (void *)(data & WORK_STRUCT_WQ_DATA_MASK);
| ^
[ ... a couple of other cases ... ]
and while it's not immediately clear exactly why gcc started complaining
about it now, I suspect it's some C23-induced enum type handlign fixup in
gcc-13 is the cause.
Whatever the reason for starting to complain, the code and data types
are indeed disgusting enough that the complaint is warranted.
The wq code ends up creating various "helper constants" (like that
WORK_STRUCT_WQ_DATA_MASK) using an enum type, which is all kinds of
confused. The mask needs to be 'unsigned long', not some unspecified
enum type.
To make matters worse, the actual "mask and cast to a pointer" is
repeated a couple of times, and the cast isn't even always done to the
right pointer, but - as the error case above - to a 'void *' with then
the compiler finishing the job.
That's now how we roll in the kernel.
So create the masks using the proper types rather than some ambiguous
enumeration, and use a nice helper that actually does the type
conversion in one well-defined place.
Incidentally, this magically makes clang generate better code. That,
admittedly, is really just a sign of clang having been seriously
confused before, and cleaning up the typing unconfuses the compiler too.
Reported-by: Dave Airlie <airlied@gmail.com>
Link: https://lore.kernel.org/lkml/CAPM=9twNnV4zMCvrPkw3H-ajZOH-01JVh_kDrxdPYQErz8ZTdA@mail.gmail.com/
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Tejun Heo <tj@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
include/linux/workqueue.h | 15 ++++++++-------
kernel/workqueue.c | 13 ++++++++-----
2 files changed, 16 insertions(+), 12 deletions(-)
diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h
index 2fa9b311e5663..460c58fa011ae 100644
--- a/include/linux/workqueue.h
+++ b/include/linux/workqueue.h
@@ -73,7 +73,6 @@ enum {
WORK_OFFQ_FLAG_BASE = WORK_STRUCT_COLOR_SHIFT,
__WORK_OFFQ_CANCELING = WORK_OFFQ_FLAG_BASE,
- WORK_OFFQ_CANCELING = (1 << __WORK_OFFQ_CANCELING),
/*
* When a work item is off queue, its high bits point to the last
@@ -84,12 +83,6 @@ enum {
WORK_OFFQ_POOL_SHIFT = WORK_OFFQ_FLAG_BASE + WORK_OFFQ_FLAG_BITS,
WORK_OFFQ_LEFT = BITS_PER_LONG - WORK_OFFQ_POOL_SHIFT,
WORK_OFFQ_POOL_BITS = WORK_OFFQ_LEFT <= 31 ? WORK_OFFQ_LEFT : 31,
- WORK_OFFQ_POOL_NONE = (1LU << WORK_OFFQ_POOL_BITS) - 1,
-
- /* convenience constants */
- WORK_STRUCT_FLAG_MASK = (1UL << WORK_STRUCT_FLAG_BITS) - 1,
- WORK_STRUCT_WQ_DATA_MASK = ~WORK_STRUCT_FLAG_MASK,
- WORK_STRUCT_NO_POOL = (unsigned long)WORK_OFFQ_POOL_NONE << WORK_OFFQ_POOL_SHIFT,
/* bit mask for work_busy() return values */
WORK_BUSY_PENDING = 1 << 0,
@@ -99,6 +92,14 @@ enum {
WORKER_DESC_LEN = 24,
};
+/* Convenience constants - of type 'unsigned long', not 'enum'! */
+#define WORK_OFFQ_CANCELING (1ul << __WORK_OFFQ_CANCELING)
+#define WORK_OFFQ_POOL_NONE ((1ul << WORK_OFFQ_POOL_BITS) - 1)
+#define WORK_STRUCT_NO_POOL (WORK_OFFQ_POOL_NONE << WORK_OFFQ_POOL_SHIFT)
+
+#define WORK_STRUCT_FLAG_MASK ((1ul << WORK_STRUCT_FLAG_BITS) - 1)
+#define WORK_STRUCT_WQ_DATA_MASK (~WORK_STRUCT_FLAG_MASK)
+
struct work_struct {
atomic_long_t data;
struct list_head entry;
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index b9041ab881bc8..fa0a0e59b3851 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -679,12 +679,17 @@ static void clear_work_data(struct work_struct *work)
set_work_data(work, WORK_STRUCT_NO_POOL, 0);
}
+static inline struct pool_workqueue *work_struct_pwq(unsigned long data)
+{
+ return (struct pool_workqueue *)(data & WORK_STRUCT_WQ_DATA_MASK);
+}
+
static struct pool_workqueue *get_work_pwq(struct work_struct *work)
{
unsigned long data = atomic_long_read(&work->data);
if (data & WORK_STRUCT_PWQ)
- return (void *)(data & WORK_STRUCT_WQ_DATA_MASK);
+ return work_struct_pwq(data);
else
return NULL;
}
@@ -712,8 +717,7 @@ static struct worker_pool *get_work_pool(struct work_struct *work)
assert_rcu_or_pool_mutex();
if (data & WORK_STRUCT_PWQ)
- return ((struct pool_workqueue *)
- (data & WORK_STRUCT_WQ_DATA_MASK))->pool;
+ return work_struct_pwq(data)->pool;
pool_id = data >> WORK_OFFQ_POOL_SHIFT;
if (pool_id == WORK_OFFQ_POOL_NONE)
@@ -734,8 +738,7 @@ static int get_work_pool_id(struct work_struct *work)
unsigned long data = atomic_long_read(&work->data);
if (data & WORK_STRUCT_PWQ)
- return ((struct pool_workqueue *)
- (data & WORK_STRUCT_WQ_DATA_MASK))->pool->id;
+ return work_struct_pwq(data)->pool->id;
return data >> WORK_OFFQ_POOL_SHIFT;
}
--
2.39.2
^ permalink raw reply related [flat|nested] 4+ messages in thread