* [PATCH] media: pwc: Use correct device for DMA
@ 2021-01-04 17:00 Matwey V. Kornilov
0 siblings, 0 replies; 5+ messages in thread
From: Matwey V. Kornilov @ 2021-01-04 17:00 UTC (permalink / raw)
To: Hans Verkuil, Mauro Carvalho Chehab, Laurent Pinchart
Cc: matwey.kornilov, Matwey V. Kornilov, linux-media, linux-kernel,
harald, himo.emmerich
This fixes the following newly introduced warning:
[ 15.518253] ------------[ cut here ]------------
[ 15.518941] WARNING: CPU: 0 PID: 246 at /home/matwey/lab/linux/kernel/dma/mapping.c:149 dma_map_page_attrs+0x1a8/0x1d0
[ 15.520634] Modules linked in: pwc videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common videodev mc efivarfs
[ 15.522335] CPU: 0 PID: 246 Comm: v4l2-test Not tainted 5.11.0-rc1+ #1
[ 15.523281] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015
[ 15.524438] RIP: 0010:dma_map_page_attrs+0x1a8/0x1d0
[ 15.525135] Code: 10 5b 5d 41 5c 41 5d c3 4d 89 d0 eb d7 4d 89 c8 89 e9 48 89 da e8 68 29 00 00 eb d1 48 89 f2 48 2b 50 18 48 89 d0 eb 83 0f 0b <0f> 0b 48 c7 c0 ff ff ff ff eb b8 48 89 d9 48 8b 40 40 e8 61 69 d2
[ 15.527938] RSP: 0018:ffffa2694047bca8 EFLAGS: 00010246
[ 15.528716] RAX: 0000000000000000 RBX: 0000000000002580 RCX: 0000000000000000
[ 15.529782] RDX: 0000000000000000 RSI: ffffcdce000ecc00 RDI: ffffa0b4bdb888a0
[ 15.530849] RBP: 0000000000000002 R08: 0000000000000002 R09: 0000000000000000
[ 15.531881] R10: 0000000000000004 R11: 000000000002d8c0 R12: 0000000000000000
[ 15.532911] R13: ffffa0b4bdb88800 R14: ffffa0b483820000 R15: ffffa0b4bdb888a0
[ 15.533942] FS: 00007fc5fbb5e4c0(0000) GS:ffffa0b4fc000000(0000) knlGS:0000000000000000
[ 15.535141] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 15.535988] CR2: 00007fc5fb6ea138 CR3: 0000000003812000 CR4: 00000000001506f0
[ 15.537025] Call Trace:
[ 15.537425] start_streaming+0x2e9/0x4b0 [pwc]
[ 15.538143] vb2_start_streaming+0x5e/0x110 [videobuf2_common]
[ 15.538989] vb2_core_streamon+0x107/0x140 [videobuf2_common]
[ 15.539831] __video_do_ioctl+0x18f/0x4a0 [videodev]
[ 15.540670] video_usercopy+0x13a/0x5b0 [videodev]
[ 15.541349] ? video_put_user+0x230/0x230 [videodev]
[ 15.542096] ? selinux_file_ioctl+0x143/0x200
[ 15.542752] v4l2_ioctl+0x40/0x50 [videodev]
[ 15.543360] __x64_sys_ioctl+0x89/0xc0
[ 15.543930] do_syscall_64+0x33/0x40
[ 15.544448] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 15.545236] RIP: 0033:0x7fc5fb671587
[ 15.545780] Code: b3 66 90 48 8b 05 11 49 2c 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 48 2c 00 f7 d8 64 89 01 48
[ 15.548486] RSP: 002b:00007fff0f71f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 15.549578] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fc5fb671587
[ 15.550664] RDX: 00007fff0f71f060 RSI: 0000000040045612 RDI: 0000000000000003
[ 15.551706] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[ 15.552738] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff0f71f060
[ 15.553817] R13: 00007fff0f71f1d0 R14: 0000000000de1270 R15: 0000000000000000
[ 15.554914] ---[ end trace 7be03122966c2486 ]---
Fixes: 1161db6776bd ("media: usb: pwc: Don't use coherent DMA buffers for ISO transfer")
Signed-off-by: Matwey V. Kornilov <matwey@sai.msu.ru>
---
drivers/media/usb/pwc/pwc-if.c | 22 +++++++++++++---------
1 file changed, 13 insertions(+), 9 deletions(-)
diff --git a/drivers/media/usb/pwc/pwc-if.c b/drivers/media/usb/pwc/pwc-if.c
index 61869636ec61..5e3339cc31c0 100644
--- a/drivers/media/usb/pwc/pwc-if.c
+++ b/drivers/media/usb/pwc/pwc-if.c
@@ -155,16 +155,17 @@ static const struct video_device pwc_template = {
/***************************************************************************/
/* Private functions */
-static void *pwc_alloc_urb_buffer(struct device *dev,
+static void *pwc_alloc_urb_buffer(struct usb_device *dev,
size_t size, dma_addr_t *dma_handle)
{
+ struct device *dmadev = dev->bus->sysdev;
void *buffer = kmalloc(size, GFP_KERNEL);
if (!buffer)
return NULL;
- *dma_handle = dma_map_single(dev, buffer, size, DMA_FROM_DEVICE);
- if (dma_mapping_error(dev, *dma_handle)) {
+ *dma_handle = dma_map_single(dmadev, buffer, size, DMA_FROM_DEVICE);
+ if (dma_mapping_error(dmadev, *dma_handle)) {
kfree(buffer);
return NULL;
}
@@ -172,12 +173,14 @@ static void *pwc_alloc_urb_buffer(struct device *dev,
return buffer;
}
-static void pwc_free_urb_buffer(struct device *dev,
+static void pwc_free_urb_buffer(struct usb_device *dev,
size_t size,
void *buffer,
dma_addr_t dma_handle)
{
- dma_unmap_single(dev, dma_handle, size, DMA_FROM_DEVICE);
+ struct device *dmadev = dev->bus->sysdev;
+
+ dma_unmap_single(dmadev, dma_handle, size, DMA_FROM_DEVICE);
kfree(buffer);
}
@@ -282,6 +285,7 @@ static void pwc_frame_complete(struct pwc_device *pdev)
static void pwc_isoc_handler(struct urb *urb)
{
struct pwc_device *pdev = (struct pwc_device *)urb->context;
+ struct device *dmadev = urb->dev->bus->sysdev;
int i, fst, flen;
unsigned char *iso_buf = NULL;
@@ -328,7 +332,7 @@ static void pwc_isoc_handler(struct urb *urb)
/* Reset ISOC error counter. We did get here, after all. */
pdev->visoc_errors = 0;
- dma_sync_single_for_cpu(&urb->dev->dev,
+ dma_sync_single_for_cpu(dmadev,
urb->transfer_dma,
urb->transfer_buffer_length,
DMA_FROM_DEVICE);
@@ -379,7 +383,7 @@ static void pwc_isoc_handler(struct urb *urb)
pdev->vlast_packet_size = flen;
}
- dma_sync_single_for_device(&urb->dev->dev,
+ dma_sync_single_for_device(dmadev,
urb->transfer_dma,
urb->transfer_buffer_length,
DMA_FROM_DEVICE);
@@ -461,7 +465,7 @@ static int pwc_isoc_init(struct pwc_device *pdev)
urb->pipe = usb_rcvisocpipe(udev, pdev->vendpoint);
urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
urb->transfer_buffer_length = ISO_BUFFER_SIZE;
- urb->transfer_buffer = pwc_alloc_urb_buffer(&udev->dev,
+ urb->transfer_buffer = pwc_alloc_urb_buffer(udev,
urb->transfer_buffer_length,
&urb->transfer_dma);
if (urb->transfer_buffer == NULL) {
@@ -524,7 +528,7 @@ static void pwc_iso_free(struct pwc_device *pdev)
if (urb) {
PWC_DEBUG_MEMORY("Freeing URB\n");
if (urb->transfer_buffer)
- pwc_free_urb_buffer(&urb->dev->dev,
+ pwc_free_urb_buffer(urb->dev,
urb->transfer_buffer_length,
urb->transfer_buffer,
urb->transfer_dma);
--
2.26.2
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH] media: pwc: Use correct device for DMA
2021-01-17 13:20 ` Greg KH
@ 2021-02-22 11:08 ` Greg KH
0 siblings, 0 replies; 5+ messages in thread
From: Greg KH @ 2021-02-22 11:08 UTC (permalink / raw)
To: Matwey V. Kornilov; +Cc: stable
On Sun, Jan 17, 2021 at 02:20:24PM +0100, Greg KH wrote:
> On Sun, Jan 17, 2021 at 04:02:53PM +0300, Matwey V. Kornilov wrote:
> > вс, 17 янв. 2021 г. в 15:56, Greg KH <gregkh@linuxfoundation.org>:
> >
> > > On Sun, Jan 17, 2021 at 02:05:23PM +0300, Matwey V. Kornilov wrote:
> > > > This fixes the following newly introduced warning:
> > > >
> > > > [ 15.518253] ------------[ cut here ]------------
> > > > [ 15.518941] WARNING: CPU: 0 PID: 246 at kernel/dma/mapping.c:149
> > > dma_map_page_attrs+0x1a8/0x1d0
> > > > [ 15.520634] Modules linked in: pwc videobuf2_vmalloc videobuf2_memops
> > > videobuf2_v4l2 videobuf2_common videodev mc efivarfs
> > > > [ 15.522335] CPU: 0 PID: 246 Comm: v4l2-test Not tainted 5.11.0-rc1+ #1
> > > > [ 15.523281] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS
> > > 0.0.0 02/06/2015
> > > > [ 15.524438] RIP: 0010:dma_map_page_attrs+0x1a8/0x1d0
> > > > [ 15.525135] Code: 10 5b 5d 41 5c 41 5d c3 4d 89 d0 eb d7 4d 89 c8 89
> > > e9 48 89 da e8 68 29 00 00 eb d1 48 89 f2 48 2b 50 18 48 89 d0 eb 83 0f 0b
> > > <0f> 0b 48 c7 c0 ff ff ff ff eb b8 48 89 d9 48 8b 40 40 e8 61 69 d2
> > > > [ 15.527938] RSP: 0018:ffffa2694047bca8 EFLAGS: 00010246
> > > > [ 15.528716] RAX: 0000000000000000 RBX: 0000000000002580 RCX:
> > > 0000000000000000
> > > > [ 15.529782] RDX: 0000000000000000 RSI: ffffcdce000ecc00 RDI:
> > > ffffa0b4bdb888a0
> > > > [ 15.530849] RBP: 0000000000000002 R08: 0000000000000002 R09:
> > > 0000000000000000
> > > > [ 15.531881] R10: 0000000000000004 R11: 000000000002d8c0 R12:
> > > 0000000000000000
> > > > [ 15.532911] R13: ffffa0b4bdb88800 R14: ffffa0b483820000 R15:
> > > ffffa0b4bdb888a0
> > > > [ 15.533942] FS: 00007fc5fbb5e4c0(0000) GS:ffffa0b4fc000000(0000)
> > > knlGS:0000000000000000
> > > > [ 15.535141] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> > > > [ 15.535988] CR2: 00007fc5fb6ea138 CR3: 0000000003812000 CR4:
> > > 00000000001506f0
> > > > [ 15.537025] Call Trace:
> > > > [ 15.537425] start_streaming+0x2e9/0x4b0 [pwc]
> > > > [ 15.538143] vb2_start_streaming+0x5e/0x110 [videobuf2_common]
> > > > [ 15.538989] vb2_core_streamon+0x107/0x140 [videobuf2_common]
> > > > [ 15.539831] __video_do_ioctl+0x18f/0x4a0 [videodev]
> > > > [ 15.540670] video_usercopy+0x13a/0x5b0 [videodev]
> > > > [ 15.541349] ? video_put_user+0x230/0x230 [videodev]
> > > > [ 15.542096] ? selinux_file_ioctl+0x143/0x200
> > > > [ 15.542752] v4l2_ioctl+0x40/0x50 [videodev]
> > > > [ 15.543360] __x64_sys_ioctl+0x89/0xc0
> > > > [ 15.543930] do_syscall_64+0x33/0x40
> > > > [ 15.544448] entry_SYSCALL_64_after_hwframe+0x44/0xa9
> > > > [ 15.545236] RIP: 0033:0x7fc5fb671587
> > > > [ 15.545780] Code: b3 66 90 48 8b 05 11 49 2c 00 64 c7 00 26 00 00 00
> > > 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05
> > > <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 48 2c 00 f7 d8 64 89 01 48
> > > > [ 15.548486] RSP: 002b:00007fff0f71f038 EFLAGS: 00000246 ORIG_RAX:
> > > 0000000000000010
> > > > [ 15.549578] RAX: ffffffffffffffda RBX: 0000000000000003 RCX:
> > > 00007fc5fb671587
> > > > [ 15.550664] RDX: 00007fff0f71f060 RSI: 0000000040045612 RDI:
> > > 0000000000000003
> > > > [ 15.551706] RBP: 0000000000000000 R08: 0000000000000000 R09:
> > > 0000000000000000
> > > > [ 15.552738] R10: 0000000000000000 R11: 0000000000000246 R12:
> > > 00007fff0f71f060
> > > > [ 15.553817] R13: 00007fff0f71f1d0 R14: 0000000000de1270 R15:
> > > 0000000000000000
> > > > [ 15.554914] ---[ end trace 7be03122966c2486 ]---
> > > >
> > > > Fixes: 1161db6776bd ("media: usb: pwc: Don't use coherent DMA buffers
> > > for ISO transfer")
> > > > Signed-off-by: Matwey V. Kornilov <matwey@sai.msu.ru>
> > > > Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
> > > > Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
> > > > Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=210777
> > > > Cc: stable@vger.kernel.org # v5.10+
> > > > Signed-off-by: Matwey V. Kornilov <matwey@sai.msu.ru>
> > > > ---
> > > > drivers/media/usb/pwc/pwc-if.c | 22 +++++++++++++---------
> > > > 1 file changed, 13 insertions(+), 9 deletions(-)
> > >
> > > What is the git commit id of this commit in Linus's tree?
> > >
> >
> >
> > It is 69c9e825e812ec6d663e64ebf14bd3bc7f37e2c7 in next/linux-next.git
>
> <formletter>
>
> This is not the correct way to submit patches for inclusion in the
> stable kernel tree. Please read:
> https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
> for how to do this properly.
>
> </formletter>
>
> We can't do anything with a patch that is not in Linus's tree, sorry.
> Please wait for it to show up there before asking us to backport
> something that is not already tagged with a "cc: stable" mark.
Now queued up.
thanks,
greg k-h
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] media: pwc: Use correct device for DMA
[not found] ` <CAJs94EaX-aP0Fz+wABti5Hj9j3=b7UQ+SFLK_TOn8XDNbmPLiA@mail.gmail.com>
@ 2021-01-17 13:20 ` Greg KH
2021-02-22 11:08 ` Greg KH
0 siblings, 1 reply; 5+ messages in thread
From: Greg KH @ 2021-01-17 13:20 UTC (permalink / raw)
To: Matwey V. Kornilov; +Cc: stable
On Sun, Jan 17, 2021 at 04:02:53PM +0300, Matwey V. Kornilov wrote:
> вс, 17 янв. 2021 г. в 15:56, Greg KH <gregkh@linuxfoundation.org>:
>
> > On Sun, Jan 17, 2021 at 02:05:23PM +0300, Matwey V. Kornilov wrote:
> > > This fixes the following newly introduced warning:
> > >
> > > [ 15.518253] ------------[ cut here ]------------
> > > [ 15.518941] WARNING: CPU: 0 PID: 246 at kernel/dma/mapping.c:149
> > dma_map_page_attrs+0x1a8/0x1d0
> > > [ 15.520634] Modules linked in: pwc videobuf2_vmalloc videobuf2_memops
> > videobuf2_v4l2 videobuf2_common videodev mc efivarfs
> > > [ 15.522335] CPU: 0 PID: 246 Comm: v4l2-test Not tainted 5.11.0-rc1+ #1
> > > [ 15.523281] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS
> > 0.0.0 02/06/2015
> > > [ 15.524438] RIP: 0010:dma_map_page_attrs+0x1a8/0x1d0
> > > [ 15.525135] Code: 10 5b 5d 41 5c 41 5d c3 4d 89 d0 eb d7 4d 89 c8 89
> > e9 48 89 da e8 68 29 00 00 eb d1 48 89 f2 48 2b 50 18 48 89 d0 eb 83 0f 0b
> > <0f> 0b 48 c7 c0 ff ff ff ff eb b8 48 89 d9 48 8b 40 40 e8 61 69 d2
> > > [ 15.527938] RSP: 0018:ffffa2694047bca8 EFLAGS: 00010246
> > > [ 15.528716] RAX: 0000000000000000 RBX: 0000000000002580 RCX:
> > 0000000000000000
> > > [ 15.529782] RDX: 0000000000000000 RSI: ffffcdce000ecc00 RDI:
> > ffffa0b4bdb888a0
> > > [ 15.530849] RBP: 0000000000000002 R08: 0000000000000002 R09:
> > 0000000000000000
> > > [ 15.531881] R10: 0000000000000004 R11: 000000000002d8c0 R12:
> > 0000000000000000
> > > [ 15.532911] R13: ffffa0b4bdb88800 R14: ffffa0b483820000 R15:
> > ffffa0b4bdb888a0
> > > [ 15.533942] FS: 00007fc5fbb5e4c0(0000) GS:ffffa0b4fc000000(0000)
> > knlGS:0000000000000000
> > > [ 15.535141] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> > > [ 15.535988] CR2: 00007fc5fb6ea138 CR3: 0000000003812000 CR4:
> > 00000000001506f0
> > > [ 15.537025] Call Trace:
> > > [ 15.537425] start_streaming+0x2e9/0x4b0 [pwc]
> > > [ 15.538143] vb2_start_streaming+0x5e/0x110 [videobuf2_common]
> > > [ 15.538989] vb2_core_streamon+0x107/0x140 [videobuf2_common]
> > > [ 15.539831] __video_do_ioctl+0x18f/0x4a0 [videodev]
> > > [ 15.540670] video_usercopy+0x13a/0x5b0 [videodev]
> > > [ 15.541349] ? video_put_user+0x230/0x230 [videodev]
> > > [ 15.542096] ? selinux_file_ioctl+0x143/0x200
> > > [ 15.542752] v4l2_ioctl+0x40/0x50 [videodev]
> > > [ 15.543360] __x64_sys_ioctl+0x89/0xc0
> > > [ 15.543930] do_syscall_64+0x33/0x40
> > > [ 15.544448] entry_SYSCALL_64_after_hwframe+0x44/0xa9
> > > [ 15.545236] RIP: 0033:0x7fc5fb671587
> > > [ 15.545780] Code: b3 66 90 48 8b 05 11 49 2c 00 64 c7 00 26 00 00 00
> > 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05
> > <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 48 2c 00 f7 d8 64 89 01 48
> > > [ 15.548486] RSP: 002b:00007fff0f71f038 EFLAGS: 00000246 ORIG_RAX:
> > 0000000000000010
> > > [ 15.549578] RAX: ffffffffffffffda RBX: 0000000000000003 RCX:
> > 00007fc5fb671587
> > > [ 15.550664] RDX: 00007fff0f71f060 RSI: 0000000040045612 RDI:
> > 0000000000000003
> > > [ 15.551706] RBP: 0000000000000000 R08: 0000000000000000 R09:
> > 0000000000000000
> > > [ 15.552738] R10: 0000000000000000 R11: 0000000000000246 R12:
> > 00007fff0f71f060
> > > [ 15.553817] R13: 00007fff0f71f1d0 R14: 0000000000de1270 R15:
> > 0000000000000000
> > > [ 15.554914] ---[ end trace 7be03122966c2486 ]---
> > >
> > > Fixes: 1161db6776bd ("media: usb: pwc: Don't use coherent DMA buffers
> > for ISO transfer")
> > > Signed-off-by: Matwey V. Kornilov <matwey@sai.msu.ru>
> > > Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
> > > Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
> > > Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=210777
> > > Cc: stable@vger.kernel.org # v5.10+
> > > Signed-off-by: Matwey V. Kornilov <matwey@sai.msu.ru>
> > > ---
> > > drivers/media/usb/pwc/pwc-if.c | 22 +++++++++++++---------
> > > 1 file changed, 13 insertions(+), 9 deletions(-)
> >
> > What is the git commit id of this commit in Linus's tree?
> >
>
>
> It is 69c9e825e812ec6d663e64ebf14bd3bc7f37e2c7 in next/linux-next.git
<formletter>
This is not the correct way to submit patches for inclusion in the
stable kernel tree. Please read:
https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
for how to do this properly.
</formletter>
We can't do anything with a patch that is not in Linus's tree, sorry.
Please wait for it to show up there before asking us to backport
something that is not already tagged with a "cc: stable" mark.
thanks,
greg k-h
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] media: pwc: Use correct device for DMA
2021-01-17 11:05 Matwey V. Kornilov
@ 2021-01-17 12:56 ` Greg KH
[not found] ` <CAJs94EaX-aP0Fz+wABti5Hj9j3=b7UQ+SFLK_TOn8XDNbmPLiA@mail.gmail.com>
0 siblings, 1 reply; 5+ messages in thread
From: Greg KH @ 2021-01-17 12:56 UTC (permalink / raw)
To: Matwey V. Kornilov; +Cc: stable, matwey.kornilov
On Sun, Jan 17, 2021 at 02:05:23PM +0300, Matwey V. Kornilov wrote:
> This fixes the following newly introduced warning:
>
> [ 15.518253] ------------[ cut here ]------------
> [ 15.518941] WARNING: CPU: 0 PID: 246 at kernel/dma/mapping.c:149 dma_map_page_attrs+0x1a8/0x1d0
> [ 15.520634] Modules linked in: pwc videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common videodev mc efivarfs
> [ 15.522335] CPU: 0 PID: 246 Comm: v4l2-test Not tainted 5.11.0-rc1+ #1
> [ 15.523281] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015
> [ 15.524438] RIP: 0010:dma_map_page_attrs+0x1a8/0x1d0
> [ 15.525135] Code: 10 5b 5d 41 5c 41 5d c3 4d 89 d0 eb d7 4d 89 c8 89 e9 48 89 da e8 68 29 00 00 eb d1 48 89 f2 48 2b 50 18 48 89 d0 eb 83 0f 0b <0f> 0b 48 c7 c0 ff ff ff ff eb b8 48 89 d9 48 8b 40 40 e8 61 69 d2
> [ 15.527938] RSP: 0018:ffffa2694047bca8 EFLAGS: 00010246
> [ 15.528716] RAX: 0000000000000000 RBX: 0000000000002580 RCX: 0000000000000000
> [ 15.529782] RDX: 0000000000000000 RSI: ffffcdce000ecc00 RDI: ffffa0b4bdb888a0
> [ 15.530849] RBP: 0000000000000002 R08: 0000000000000002 R09: 0000000000000000
> [ 15.531881] R10: 0000000000000004 R11: 000000000002d8c0 R12: 0000000000000000
> [ 15.532911] R13: ffffa0b4bdb88800 R14: ffffa0b483820000 R15: ffffa0b4bdb888a0
> [ 15.533942] FS: 00007fc5fbb5e4c0(0000) GS:ffffa0b4fc000000(0000) knlGS:0000000000000000
> [ 15.535141] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 15.535988] CR2: 00007fc5fb6ea138 CR3: 0000000003812000 CR4: 00000000001506f0
> [ 15.537025] Call Trace:
> [ 15.537425] start_streaming+0x2e9/0x4b0 [pwc]
> [ 15.538143] vb2_start_streaming+0x5e/0x110 [videobuf2_common]
> [ 15.538989] vb2_core_streamon+0x107/0x140 [videobuf2_common]
> [ 15.539831] __video_do_ioctl+0x18f/0x4a0 [videodev]
> [ 15.540670] video_usercopy+0x13a/0x5b0 [videodev]
> [ 15.541349] ? video_put_user+0x230/0x230 [videodev]
> [ 15.542096] ? selinux_file_ioctl+0x143/0x200
> [ 15.542752] v4l2_ioctl+0x40/0x50 [videodev]
> [ 15.543360] __x64_sys_ioctl+0x89/0xc0
> [ 15.543930] do_syscall_64+0x33/0x40
> [ 15.544448] entry_SYSCALL_64_after_hwframe+0x44/0xa9
> [ 15.545236] RIP: 0033:0x7fc5fb671587
> [ 15.545780] Code: b3 66 90 48 8b 05 11 49 2c 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 48 2c 00 f7 d8 64 89 01 48
> [ 15.548486] RSP: 002b:00007fff0f71f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
> [ 15.549578] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fc5fb671587
> [ 15.550664] RDX: 00007fff0f71f060 RSI: 0000000040045612 RDI: 0000000000000003
> [ 15.551706] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
> [ 15.552738] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff0f71f060
> [ 15.553817] R13: 00007fff0f71f1d0 R14: 0000000000de1270 R15: 0000000000000000
> [ 15.554914] ---[ end trace 7be03122966c2486 ]---
>
> Fixes: 1161db6776bd ("media: usb: pwc: Don't use coherent DMA buffers for ISO transfer")
> Signed-off-by: Matwey V. Kornilov <matwey@sai.msu.ru>
> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=210777
> Cc: stable@vger.kernel.org # v5.10+
> Signed-off-by: Matwey V. Kornilov <matwey@sai.msu.ru>
> ---
> drivers/media/usb/pwc/pwc-if.c | 22 +++++++++++++---------
> 1 file changed, 13 insertions(+), 9 deletions(-)
What is the git commit id of this commit in Linus's tree?
thanks,
greg k-h
^ permalink raw reply [flat|nested] 5+ messages in thread
* [PATCH] media: pwc: Use correct device for DMA
@ 2021-01-17 11:05 Matwey V. Kornilov
2021-01-17 12:56 ` Greg KH
0 siblings, 1 reply; 5+ messages in thread
From: Matwey V. Kornilov @ 2021-01-17 11:05 UTC (permalink / raw)
To: stable; +Cc: matwey.kornilov
This fixes the following newly introduced warning:
[ 15.518253] ------------[ cut here ]------------
[ 15.518941] WARNING: CPU: 0 PID: 246 at kernel/dma/mapping.c:149 dma_map_page_attrs+0x1a8/0x1d0
[ 15.520634] Modules linked in: pwc videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common videodev mc efivarfs
[ 15.522335] CPU: 0 PID: 246 Comm: v4l2-test Not tainted 5.11.0-rc1+ #1
[ 15.523281] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015
[ 15.524438] RIP: 0010:dma_map_page_attrs+0x1a8/0x1d0
[ 15.525135] Code: 10 5b 5d 41 5c 41 5d c3 4d 89 d0 eb d7 4d 89 c8 89 e9 48 89 da e8 68 29 00 00 eb d1 48 89 f2 48 2b 50 18 48 89 d0 eb 83 0f 0b <0f> 0b 48 c7 c0 ff ff ff ff eb b8 48 89 d9 48 8b 40 40 e8 61 69 d2
[ 15.527938] RSP: 0018:ffffa2694047bca8 EFLAGS: 00010246
[ 15.528716] RAX: 0000000000000000 RBX: 0000000000002580 RCX: 0000000000000000
[ 15.529782] RDX: 0000000000000000 RSI: ffffcdce000ecc00 RDI: ffffa0b4bdb888a0
[ 15.530849] RBP: 0000000000000002 R08: 0000000000000002 R09: 0000000000000000
[ 15.531881] R10: 0000000000000004 R11: 000000000002d8c0 R12: 0000000000000000
[ 15.532911] R13: ffffa0b4bdb88800 R14: ffffa0b483820000 R15: ffffa0b4bdb888a0
[ 15.533942] FS: 00007fc5fbb5e4c0(0000) GS:ffffa0b4fc000000(0000) knlGS:0000000000000000
[ 15.535141] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 15.535988] CR2: 00007fc5fb6ea138 CR3: 0000000003812000 CR4: 00000000001506f0
[ 15.537025] Call Trace:
[ 15.537425] start_streaming+0x2e9/0x4b0 [pwc]
[ 15.538143] vb2_start_streaming+0x5e/0x110 [videobuf2_common]
[ 15.538989] vb2_core_streamon+0x107/0x140 [videobuf2_common]
[ 15.539831] __video_do_ioctl+0x18f/0x4a0 [videodev]
[ 15.540670] video_usercopy+0x13a/0x5b0 [videodev]
[ 15.541349] ? video_put_user+0x230/0x230 [videodev]
[ 15.542096] ? selinux_file_ioctl+0x143/0x200
[ 15.542752] v4l2_ioctl+0x40/0x50 [videodev]
[ 15.543360] __x64_sys_ioctl+0x89/0xc0
[ 15.543930] do_syscall_64+0x33/0x40
[ 15.544448] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 15.545236] RIP: 0033:0x7fc5fb671587
[ 15.545780] Code: b3 66 90 48 8b 05 11 49 2c 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 48 2c 00 f7 d8 64 89 01 48
[ 15.548486] RSP: 002b:00007fff0f71f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 15.549578] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fc5fb671587
[ 15.550664] RDX: 00007fff0f71f060 RSI: 0000000040045612 RDI: 0000000000000003
[ 15.551706] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[ 15.552738] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff0f71f060
[ 15.553817] R13: 00007fff0f71f1d0 R14: 0000000000de1270 R15: 0000000000000000
[ 15.554914] ---[ end trace 7be03122966c2486 ]---
Fixes: 1161db6776bd ("media: usb: pwc: Don't use coherent DMA buffers for ISO transfer")
Signed-off-by: Matwey V. Kornilov <matwey@sai.msu.ru>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=210777
Cc: stable@vger.kernel.org # v5.10+
Signed-off-by: Matwey V. Kornilov <matwey@sai.msu.ru>
---
drivers/media/usb/pwc/pwc-if.c | 22 +++++++++++++---------
1 file changed, 13 insertions(+), 9 deletions(-)
diff --git a/drivers/media/usb/pwc/pwc-if.c b/drivers/media/usb/pwc/pwc-if.c
index 61869636ec61..5e3339cc31c0 100644
--- a/drivers/media/usb/pwc/pwc-if.c
+++ b/drivers/media/usb/pwc/pwc-if.c
@@ -155,16 +155,17 @@ static const struct video_device pwc_template = {
/***************************************************************************/
/* Private functions */
-static void *pwc_alloc_urb_buffer(struct device *dev,
+static void *pwc_alloc_urb_buffer(struct usb_device *dev,
size_t size, dma_addr_t *dma_handle)
{
+ struct device *dmadev = dev->bus->sysdev;
void *buffer = kmalloc(size, GFP_KERNEL);
if (!buffer)
return NULL;
- *dma_handle = dma_map_single(dev, buffer, size, DMA_FROM_DEVICE);
- if (dma_mapping_error(dev, *dma_handle)) {
+ *dma_handle = dma_map_single(dmadev, buffer, size, DMA_FROM_DEVICE);
+ if (dma_mapping_error(dmadev, *dma_handle)) {
kfree(buffer);
return NULL;
}
@@ -172,12 +173,14 @@ static void *pwc_alloc_urb_buffer(struct device *dev,
return buffer;
}
-static void pwc_free_urb_buffer(struct device *dev,
+static void pwc_free_urb_buffer(struct usb_device *dev,
size_t size,
void *buffer,
dma_addr_t dma_handle)
{
- dma_unmap_single(dev, dma_handle, size, DMA_FROM_DEVICE);
+ struct device *dmadev = dev->bus->sysdev;
+
+ dma_unmap_single(dmadev, dma_handle, size, DMA_FROM_DEVICE);
kfree(buffer);
}
@@ -282,6 +285,7 @@ static void pwc_frame_complete(struct pwc_device *pdev)
static void pwc_isoc_handler(struct urb *urb)
{
struct pwc_device *pdev = (struct pwc_device *)urb->context;
+ struct device *dmadev = urb->dev->bus->sysdev;
int i, fst, flen;
unsigned char *iso_buf = NULL;
@@ -328,7 +332,7 @@ static void pwc_isoc_handler(struct urb *urb)
/* Reset ISOC error counter. We did get here, after all. */
pdev->visoc_errors = 0;
- dma_sync_single_for_cpu(&urb->dev->dev,
+ dma_sync_single_for_cpu(dmadev,
urb->transfer_dma,
urb->transfer_buffer_length,
DMA_FROM_DEVICE);
@@ -379,7 +383,7 @@ static void pwc_isoc_handler(struct urb *urb)
pdev->vlast_packet_size = flen;
}
- dma_sync_single_for_device(&urb->dev->dev,
+ dma_sync_single_for_device(dmadev,
urb->transfer_dma,
urb->transfer_buffer_length,
DMA_FROM_DEVICE);
@@ -461,7 +465,7 @@ static int pwc_isoc_init(struct pwc_device *pdev)
urb->pipe = usb_rcvisocpipe(udev, pdev->vendpoint);
urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
urb->transfer_buffer_length = ISO_BUFFER_SIZE;
- urb->transfer_buffer = pwc_alloc_urb_buffer(&udev->dev,
+ urb->transfer_buffer = pwc_alloc_urb_buffer(udev,
urb->transfer_buffer_length,
&urb->transfer_dma);
if (urb->transfer_buffer == NULL) {
@@ -524,7 +528,7 @@ static void pwc_iso_free(struct pwc_device *pdev)
if (urb) {
PWC_DEBUG_MEMORY("Freeing URB\n");
if (urb->transfer_buffer)
- pwc_free_urb_buffer(&urb->dev->dev,
+ pwc_free_urb_buffer(urb->dev,
urb->transfer_buffer_length,
urb->transfer_buffer,
urb->transfer_dma);
--
2.26.2
^ permalink raw reply related [flat|nested] 5+ messages in thread
end of thread, other threads:[~2021-02-22 11:08 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-01-04 17:00 [PATCH] media: pwc: Use correct device for DMA Matwey V. Kornilov
2021-01-17 11:05 Matwey V. Kornilov
2021-01-17 12:56 ` Greg KH
[not found] ` <CAJs94EaX-aP0Fz+wABti5Hj9j3=b7UQ+SFLK_TOn8XDNbmPLiA@mail.gmail.com>
2021-01-17 13:20 ` Greg KH
2021-02-22 11:08 ` Greg KH
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