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| author | Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> | 2015-01-30 15:58:23 +0900 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2015-01-30 10:35:37 -0600 |
| commit | ffb9da65755815611010e07ad1c937858f226cb2 (patch) | |
| tree | 45e5c58be6ab7fe6965e700fae0a556b33e30f9d /drivers/usb/dwc2 | |
| parent | 0f4ff5f1f95796ff5e32766136f3d3dfce1ec2d7 (diff) | |
| download | linux-ffb9da65755815611010e07ad1c937858f226cb2.tar.bz2 | |
usb: renesas_usbhs: fix NULL pointer dereference in dma_release_channel()
This patch fixes an issue that the following commit causes NULL
pointer dereference in dma_release_channel().
"usb: renesas_usbhs: add support for requesting DT DMA"
(commit id abd2dbf6bb1b5f3a03a8c76b1a8879da1dd30caa)
The usbhsf_dma_init_dt() should set fifo->{t,r}x_chan to NULL if
dma_request_slave_channel_reason() returns IS_ERR value.
Otherwise, usbhsf_dma_quit() will call dma_release_channel(), and then
NULL pointer dereference happens.
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Tested-by: Simon Horman <horms+renesas@verge.net.au>
Reported-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/dwc2')
0 files changed, 0 insertions, 0 deletions