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| author |   Johannes Berg <johannes@sipsolutions.net> | 2009-04-18 11:00:39 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@suse.de> | 2009-04-23 14:15:28 -0700 |
| commit | a8aa401f38cfb5fa26e970b48e93fb851d68fe64 (patch) | |
| tree | 99f5572d635b55af91f04bff94ce901a022ed09e /drivers/usb/core/buffer.c | |
| parent | USB: g_file_storage: fix use-after-free bug when closing files (diff) | |
| download | linux-dev-a8aa401f38cfb5fa26e970b48e93fb851d68fe64.tar.xz linux-dev-a8aa401f38cfb5fa26e970b48e93fb851d68fe64.zip | |
USB: pass mem_flags to dma_alloc_coherent
When I want to use my webcam, I get:
vvvvvvv
cheese: page allocation failure. order:5, mode:0x8004
Pid: 8100, comm: cheese Not tainted 2.6.30-rc2-wl-dirty #102
Call Trace:
[<ffffffff802c5d8e>] __alloc_pages_internal+0x3fe/0x520
[<ffffffff80210a20>] dma_generic_alloc_coherent+0x90/0x120
[<ffffffffa001c91e>] hcd_buffer_alloc+0xee/0x130 [usbcore]
[<ffffffffa000d52d>] usb_buffer_alloc+0x2d/0x40 [usbcore]
[<ffffffffa0160e14>] uvc_alloc_urb_buffers+0x84/0x140 [uvcvideo]
[<ffffffffa0160ff6>] uvc_init_video+0x126/0x400 [uvcvideo]
[...]
Oddly, I remembered fixing this and putting in __GFP_NOWARN
because uvcvideo retries a smaller allocation. However, the
allocation function doesn't pass the gfp flags through to
dma_alloc_coherent so we still get the warning!
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/core/buffer.c')
| -rw-r--r-- | drivers/usb/core/buffer.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/core/buffer.c b/drivers/usb/core/buffer.c index cadb2dc1d28a..3ba2fff71490 100644 --- a/drivers/usb/core/buffer.c +++ b/drivers/usb/core/buffer.c @@ -119,7 +119,7 @@ void *hcd_buffer_alloc( if (size <= pool_max [i]) return dma_pool_alloc(hcd->pool [i], mem_flags, dma); } - return dma_alloc_coherent(hcd->self.controller, size, dma, 0); + return dma_alloc_coherent(hcd->self.controller, size, dma, mem_flags); } void hcd_buffer_free( |