iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

sh: dma: fix request_irq usage

Browse Source 
When calling request_irq with IRQF_SHARED, the dev cookie must be set
(i.e. non-NULL), otherwise the code rejects it immediately with -EINVAL.
So restore the logic here where we'd pass a pointer to the name as a
dummy unique val.

Otherwise, booting up on my LANDISK system would fail with:
	DMAC Address Error0 request_irq fail

This was introduced in commit 7f47c7189b3e8f19a589f77a3ad169d7b691b582.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Mike Frysinger 2012-08-04 21:54:05 -04:00 committed by Paul Mundt
parent f4ba394c1b
commit 800fb3ddee
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/sh/drivers/dma/dma-sh.c
View File

@ -335,7 +335,7 @@ static int dmae_irq_init(void)
for (n = 0; n < NR_DMAE; n++) {
int i = request_irq(get_dma_error_irq(n), dma_err,
IRQF_SHARED, dmae_name[n], NULL);
IRQF_SHARED, dmae_name[n], (void *)dmae_name[n]);
if (unlikely(i < 0)) {
printk(KERN_ERR "%s request_irq fail\n", dmae_name[n]);
return i;