| Message ID | 1523367023-31981-1-git-send-email-baijiaju1990@gmail.com |
|---|---|
| State | Deferred, archived |
| Delegated to: | David Miller |
| Headers | show |
| Series | [1/2] net: wireless: zydas: Replace mdelay with msleep in zd1201_probe | expand |
diff --git a/drivers/net/wireless/zydas/zd1201.c b/drivers/net/wireless/zydas/zd1201.c index 581e857..cba2bed 100644 --- a/drivers/net/wireless/zydas/zd1201.c +++ b/drivers/net/wireless/zydas/zd1201.c @@ -74,7 +74,7 @@ static int zd1201_fw_upload(struct usb_device *dev, int apfw) data = fw_entry->data; len = fw_entry->size; - buf = kmalloc(1024, GFP_ATOMIC); + buf = kmalloc(1024, GFP_KERNEL); if (!buf) { err = -ENOMEM; goto exit;
zd1201_probe() is never called in atomic context. zd1201_fw_upload() is only called by zd1201_probe(), which is only set as ".probe" in struct usb_driver. Despite never getting called from atomic context, zd1201_fw_upload() calls kmalloc() with GFP_ATOMIC, which does not sleep for 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 <baijiaju1990@gmail.com> --- drivers/net/wireless/zydas/zd1201.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)