diff options
| author | Tapasweni Pathak <tapaswenipathak@gmail.com> | 2015-02-20 13:13:53 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-02-24 23:28:35 (GMT) |
| commit | 4a0721bf84da588bec013220f74563add71c0bbe (patch) | |
| tree | 46e0fb3e449306a1079daae6f4e6eda00981a6ce /drivers/staging/emxx_udc/emxx_udc.c | |
| parent | 371ec40392e2a774f4b6a637c30bf0d010607578 (diff) | |
| download | linux-4a0721bf84da588bec013220f74563add71c0bbe.tar.xz | |
staging: emxx_udc: Replace GFP_KERNEL with GFP_ATOMIC
To avoid deadlock, do not call blocking functions with spinlocks held.
Replace GFP_KERNEL with GFP_ATOMIC, as the latter will fail if the pile
doesn't have enough free pages but will not sleep and hence deadlock can
be avoided.
Found by Coccinelle.
Signed-off-by: Tapasweni Pathak <tapaswenipathak@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/emxx_udc/emxx_udc.c')
| -rw-r--r-- | drivers/staging/emxx_udc/emxx_udc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/staging/emxx_udc/emxx_udc.c b/drivers/staging/emxx_udc/emxx_udc.c index 4be646c..6c1de27 100644 --- a/drivers/staging/emxx_udc/emxx_udc.c +++ b/drivers/staging/emxx_udc/emxx_udc.c @@ -2794,7 +2794,7 @@ static int nbu2ss_ep_queue( if (ep->virt_buf == NULL) ep->virt_buf = (u8 *)dma_alloc_coherent( NULL, PAGE_SIZE, - &ep->phys_buf, GFP_KERNEL | GFP_DMA); + &ep->phys_buf, GFP_ATOMIC | GFP_DMA); if (ep->epnum > 0) { if (ep->direct == USB_DIR_IN) memcpy(ep->virt_buf, req->req.buf, |