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usb: gadget: Potential NULL dereference on allocation error

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The source_sink_alloc_func() function is supposed to return error
pointers on error.  The function is called from usb_get_function() which
doesn't check for NULL returns so it would result in an Oops.

Of course, in the current kernel, small allocations always succeed so
this doesn't affect runtime.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Dan Carpenter 2018-12-21 23:42:52 +03:00 committed by Felipe Balbi
parent 88b1bb1f3b
commit df28169e15
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/gadget/function/f_sourcesink.c
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@ -838,7 +838,7 @@ static struct usb_function *source_sink_alloc_func(
ss = kzalloc(sizeof(*ss), GFP_KERNEL);
if (!ss)
return NULL;
return ERR_PTR(-ENOMEM);
ss_opts = container_of(fi, struct f_ss_opts, func_inst);