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authorJia-Ju Bai <baijiaju1990@gmail.com>2018-07-27 05:52:49 +0300
committerMauro Carvalho Chehab <mchehab+samsung@kernel.org>2018-08-03 02:10:56 +0300
commit730129e9ba4dd668452371eba900e6e46f63b778 (patch)
treee7fd80f63ae587086f5110eaaf567c9ad9214453 /drivers/media/dvb-frontends
parentf46bdacdc06a2256187f98d7d063d1bd5c318b12 (diff)
downloadlinux-730129e9ba4dd668452371eba900e6e46f63b778.tar.xz
media: dvb-frontends: rtl2832_sdr: Replace GFP_ATOMIC with GFP_KERNEL
rtl2832_sdr_submit_urbs(), rtl2832_sdr_alloc_stream_bufs(), and rtl2832_sdr_alloc_urbs() are never called in atomic context. They call usb_submit_urb(), usb_alloc_coherent() and usb_alloc_urb() with GFP_ATOMIC, which is not necessary. GFP_ATOMIC can be replaced with GFP_KERNEL. This is found by a static analysis tool named DCNS written by myself. Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media/dvb-frontends')
-rw-r--r--drivers/media/dvb-frontends/rtl2832_sdr.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/media/dvb-frontends/rtl2832_sdr.c b/drivers/media/dvb-frontends/rtl2832_sdr.c
index c6e78d870ccd..d448d9d4879c 100644
--- a/drivers/media/dvb-frontends/rtl2832_sdr.c
+++ b/drivers/media/dvb-frontends/rtl2832_sdr.c
@@ -301,7 +301,7 @@ static int rtl2832_sdr_submit_urbs(struct rtl2832_sdr_dev *dev)
for (i = 0; i < dev->urbs_initialized; i++) {
dev_dbg(&pdev->dev, "submit urb=%d\n", i);
- ret = usb_submit_urb(dev->urb_list[i], GFP_ATOMIC);
+ ret = usb_submit_urb(dev->urb_list[i], GFP_KERNEL);
if (ret) {
dev_err(&pdev->dev,
"Could not submit urb no. %d - get them all back\n",
@@ -345,7 +345,7 @@ static int rtl2832_sdr_alloc_stream_bufs(struct rtl2832_sdr_dev *dev)
for (dev->buf_num = 0; dev->buf_num < MAX_BULK_BUFS; dev->buf_num++) {
dev->buf_list[dev->buf_num] = usb_alloc_coherent(dev->udev,
- BULK_BUFFER_SIZE, GFP_ATOMIC,
+ BULK_BUFFER_SIZE, GFP_KERNEL,
&dev->dma_addr[dev->buf_num]);
if (!dev->buf_list[dev->buf_num]) {
dev_dbg(&pdev->dev, "alloc buf=%d failed\n",
@@ -390,7 +390,7 @@ static int rtl2832_sdr_alloc_urbs(struct rtl2832_sdr_dev *dev)
/* allocate the URBs */
for (i = 0; i < MAX_BULK_BUFS; i++) {
dev_dbg(&pdev->dev, "alloc urb=%d\n", i);
- dev->urb_list[i] = usb_alloc_urb(0, GFP_ATOMIC);
+ dev->urb_list[i] = usb_alloc_urb(0, GFP_KERNEL);
if (!dev->urb_list[i]) {
for (j = 0; j < i; j++)
usb_free_urb(dev->urb_list[j]);