sh: dma: fix request_irq usage

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>

diff --git a/arch/sh/drivers/dma/dma-sh.c b/arch/sh/drivers/dma/dma-sh.c
index 4c171f1..b225656 100644 (file)
--- a/arch/sh/drivers/dma/dma-sh.c
+++ b/arch/sh/drivers/dma/dma-sh.c
@@ -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;