and removal procedure,
which can fix the problem.
Signed-off-by: Jia-Ju Bai <baijiaju1...@163.com>
---
drivers/net/wireless/rt2x00/rt2x00pci.c |2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/wireless/rt2x00/rt2x00pci.c
b/drivers/net/wireless/rt2x00/rt2x00pci.c
index d93db4b..e
On 01/05/2016 12:50 AM, Helmut Schaa wrote:
On Mon, Jan 4, 2016 at 8:55 AM, Jia-Ju Bai<baijiaju1...@163.com> wrote:
The driver calls pci_set_mwi to enable memory-write-invalidate when it
is initialized, but does not call pci_clear_mwi when it is removed. Many
other drivers calls pci_cle
, and it actually fixes the bug.
Signed-off-by: Jia-Ju Bai <baijiaju1...@163.com>
---
drivers/net/wireless/iwlegacy/4965-mac.c |1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/wireless/iwlegacy/4965-mac.c
b/drivers/net/wireless/iwlegacy/4965-mac.c
index 6656215..fd7b5c7
red again after this function.
Signed-off-by: Jia-Ju Bai <baijiaju1...@163.com>
---
drivers/net/wireless/broadcom/b43legacy/main.c |2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/wireless/broadcom/b43legacy/main.c
b/drivers/net/wireless/broadcom/b43legacy/main.c
inde
e lock is released before cancel_work_sync, and the lock
is acquired again after this function.
Signed-off-by: Jia-Ju Bai <baijiaju1...@163.com>
---
drivers/net/wireless/st/cw1200/sta.c |2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/wireless/st/cw1200/sta.c
b/drivers/net
On 06/01/2017 08:07 AM, Larry Finger wrote:
On 05/31/2017 10:32 AM, Michael Büsch wrote:
On Wed, 31 May 2017 13:26:43 +0300
Kalle Valo <kv...@codeaurora.org> wrote:
Jia-Ju Bai <baijiaju1...@163.com> writes:
The driver may sleep under a spin lock, and the functi
On 06/01/2017 01:33 AM, Larry Finger wrote:
On 05/31/2017 05:29 AM, Jia-Ju Bai wrote:
The driver may sleep under a spin lock, and the function call path is:
b43legacy_attr_interfmode_store (acquire the lock by spin_lock_irqsave)
b43legacy_radio_set_interference_mitigation
b43legacy_synth_pu_workaround
might_sleep and msleep --> may sleep
Fixing it may be complex, and a possible way is to remove
spin_lock_irqsave and spin_lock_irqrestore in
b43legacy_attr_interfmode_store, and the code has been protected by
mutex_lock and mutex_unlock.
Signed-off-by: Jia-Ju
No rcu_read_lock is called, but rcu_read_unlock is still called.
Thus rcu_read_unlock should be removed.
Signed-off-by: Jia-Ju Bai <baijiaju1...@163.com>
---
drivers/net/wireless/ath/wcn36xx/main.c |1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/net/wireless/ath/wcn36xx/mai
.
This bug is found by my static analysis tool and my code review.
Signed-off-by: Jia-Ju Bai <baijiaju1...@163.com>
---
crypto/shash.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/crypto/shash.c b/crypto/shash.c
index 5e31c8d..8fcecc6 100644
--- a/crypto/shash.c
+++ b/
it, GFP_KERNEL is replaced with GFP_ATOMIC.
This bug is found by my static analysis tool and my code review.
Signed-off-by: Jia-Ju Bai <baijiaju1...@163.com>
---
crypto/shash.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/crypto/shash.c b/crypto/shash.c
index 5
ock --> may sleep
A possible fix is to use spinlock instead of mutex lock in
pcmcia_access_config in drivers/pcmcia/pcmcia_resource.c.
These bugs are found by my static analysis tool and my code review.
Thanks,
Jia-Ju Bai
SAC) and checked
by my code review.
Thanks,
Jia-Ju Bai
off-by: Jia-Ju Bai <baijiaju1...@163.com>
---
drivers/net/wireless/mac80211_hwsim.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/mac80211_hwsim.c
b/drivers/net/wireless/mac80211_hwsim.c
index 10b075a..f2ebf4a 100644
--- a/drivers/net/wireless/mac8021
;sc->next_chan"
should be also protected by the lock.
Signed-off-by: Jia-Ju Bai <baijiaju1...@gmail.com>
---
drivers/net/wireless/ath/ath9k/channel.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/ath/ath9k/channel.c
b/drivers/net/wireless/ath/ath
b43_radio_2057_init_post is not called in an interrupt handler
nor holding a spinlock.
The function mdelay in it can be replaced with msleep, to reduce busy wait.
Signed-off-by: Jia-Ju Bai <baijiaju1...@gmail.com>
---
drivers/net/wireless/broadcom/b43/phy_n.c |2 +-
1 file chan
b43_radio_2057_init_post is not called in an interrupt handler
nor holding a spinlock.
The function mdelay in it can be replaced with msleep, to reduce busy wait.
Signed-off-by: Jia-Ju Bai <baijiaju1...@gmail.com>
---
drivers/net/wireless/broadcom/b43/phy_n.c |2 +-
1 file chan
b43_radio_2057_init_post is not called in an interrupt handler
nor holding a spinlock.
The function mdelay in it can be replaced with usleep_range,
to reduce busy wait.
Signed-off-by: Jia-Ju Bai <baijiaju1...@gmail.com>
---
v2:
* Replace mdelay with usleep_range, instead of msleep in v1.
On 2018/1/9 17:07, Arend van Spriel wrote:
On 1/9/2018 9:39 AM, Jia-Ju Bai wrote:
On 2018/1/9 16:35, Greg KH wrote:
On Tue, Jan 09, 2018 at 09:40:06AM +0800, Jia-Ju Bai wrote:
b43_radio_2057_init_post is not called in an interrupt handler
nor holding a spinlock.
The function mdelay
On 2018/1/9 0:31, Larry Finger wrote:
On 01/08/2018 10:21 AM, Kalle Valo wrote:
Jia-Ju Bai <baijiaju1...@gmail.com> wrote:
b43_radio_2057_init_post is not called in an interrupt handler
nor holding a spinlock.
The function mdelay in it can be replaced with msleep, to reduce
bus
analysis tool named DCNS written by myself.
Signed-off-by: Jia-Ju Bai <baijiaju1...@gmail.com>
---
drivers/bcma/driver_chipcommon_pmu.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/bcma/driver_chipcommon_pmu.c
b/drivers/bcma/driver_chipcommon_pmu.c
index f
On 2018/1/27 0:26, Larry Finger wrote:
On 01/26/2018 03:13 AM, Jia-Ju Bai wrote:
After checking all possible call chains to bcma_pmu_resources_init()
here,
my tool finds that this function is never called in atomic context,
namely never in an interrupt handler or holding a spinlock.
Thus
sy waiting.
This is found by a static analysis tool named DCNS written by myself.
And I also manually check it.
Signed-off-by: Jia-Ju Bai <baijiaju1...@gmail.com>
---
drivers/net/wireless/zydas/zd1201.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/zydas/zd1
allocation.
GFP_ATOMIC is not necessary and can be replaced with GFP_KERNEL,
which can sleep and improve the possibility of sucessful allocation.
This is found by a static analysis tool named DCNS written by myself.
And I also manually check it.
Signed-off-by: Jia-Ju Bai <baijiaju1...@gmail.com&
() to busily wait.
This is not necessary and can be replaced with usleep_range() to
avoid busy waiting.
This is found by a static analysis tool named DCNS written by myself.
And I also manually check it.
Signed-off-by: Jia-Ju Bai <baijiaju1...@gmail.com>
---
drivers/net/wireless/cisco/airo.c | 2
also manually check it.
Signed-off-by: Jia-Ju Bai <baijiaju1...@gmail.com>
---
drivers/net/wireless/broadcom/b43legacy/dma.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/broadcom/b43legacy/dma.c
b/drivers/net/wireless/broadcom/b43legacy/dma.c
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