diff options
| author | Duoming Zhou <duoming@zju.edu.cn> | 2022-06-07 06:26:25 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-08-17 16:15:21 +0300 |
| commit | e6a4d422002bf46bca0ae350782e03da5fd28188 (patch) | |
| tree | 630cd221bb02db896737fdd3da85d47be806959e /sound/soc/intel/catpt | |
| parent | 2b1a324933bdda27b00c877d3cd3a6bac3a01440 (diff) | |
| download | linux-e6a4d422002bf46bca0ae350782e03da5fd28188.tar.xz | |
devcoredump: remove the useless gfp_t parameter in dev_coredumpv and dev_coredumpm
[ Upstream commit 77515ebaf01920e2db49e04672ef669a7c2907f2 ]
The dev_coredumpv() and dev_coredumpm() could not be used in atomic
context, because they call kvasprintf_const() and kstrdup() with
GFP_KERNEL parameter. The process is shown below:
dev_coredumpv(.., gfp_t gfp)
dev_coredumpm(.., gfp_t gfp)
dev_set_name
kobject_set_name_vargs
kvasprintf_const(GFP_KERNEL, ...); //may sleep
kstrdup(s, GFP_KERNEL); //may sleep
This patch removes gfp_t parameter of dev_coredumpv() and dev_coredumpm()
and changes the gfp_t parameter of kzalloc() in dev_coredumpm() to
GFP_KERNEL in order to show they could not be used in atomic context.
Fixes: 833c95456a70 ("device coredump: add new device coredump class")
Reviewed-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Duoming Zhou <duoming@zju.edu.cn>
Link: https://lore.kernel.org/r/df72af3b1862bac7d8e793d1f3931857d3779dfd.1654569290.git.duoming@zju.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'sound/soc/intel/catpt')
| -rw-r--r-- | sound/soc/intel/catpt/dsp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/soc/intel/catpt/dsp.c b/sound/soc/intel/catpt/dsp.c index 346bec000306..d2afe9ff1e3a 100644 --- a/sound/soc/intel/catpt/dsp.c +++ b/sound/soc/intel/catpt/dsp.c @@ -539,7 +539,7 @@ int catpt_coredump(struct catpt_dev *cdev) pos += CATPT_DMA_REGS_SIZE; } - dev_coredumpv(cdev->dev, dump, dump_size, GFP_KERNEL); + dev_coredumpv(cdev->dev, dump, dump_size); return 0; } |