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Commit 4f053a24eca933ec10ce68eef61d38d179f34e50

Authored by Kuninori Morimoto
Committed by Felipe Balbi
1 parent 000b7f5127
Exists in smarc-l5.0.0_1.0.0-ga and in 5 other branches imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga

usb: renesas_usbhs: fixup: avoid NULL access on error case pipe detach 

If renesas_usbhs or DMAEngine interrupt didn't happen by a certain cause,
urb->ep will be NULL by usb time out.
Then, host mode will access to it and crash kernel.
This patch fixes it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

Showing 1 changed file with 5 additions and 0 deletions Side-by-side Diff

drivers/usb/renesas_usbhs/mod_host.c
Diff comments   View file @ 4f053a2
... ... @@ -334,6 +334,11 @@
334 334 struct device *dev = usbhs_priv_to_dev(priv);
335 335 unsigned long flags;
336 336  
  337 + if (unlikely(!uep)) {
  338 + dev_err(dev, "no uep\n");
  339 + return;
  340 + }
  341 +
337 342 /******************** spin lock ********************/
338 343 usbhs_lock(priv, flags);
339 344