* [PATCH] drivers:pcmcia:m32r_pcc:Check return value of request_region()
@ 2017-06-15 15:11 nobble
0 siblings, 0 replies; only message in thread
From: nobble @ 2017-06-15 15:11 UTC (permalink / raw)
To: linux-pcmcia, linux-kernel
request_region() can fail here and check its return value
Signed-off-by: nobbleRen <nobbleren@gmail.com>
---
drivers/pcmcia/m32r_pcc.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/pcmcia/m32r_pcc.c b/drivers/pcmcia/m32r_pcc.c
index e50bbf8..5ab241a 100644
--- a/drivers/pcmcia/m32r_pcc.c
+++ b/drivers/pcmcia/m32r_pcc.c
@@ -316,7 +316,8 @@ static int add_pcc_socket(ulong base, int irq, ulong mapaddr,
/* add pcc */
if (t->base > 0) {
- request_region(t->base, 0x20, "m32r-pcc");
+ if (!request_region(t->base, 0x20, "m32r-pcc"))
+ return -EBUSY;
}
printk(KERN_INFO " %s ", pcc[pcc_sockets].name);
--
1.9.1
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2017-06-15 15:11 [PATCH] drivers:pcmcia:m32r_pcc:Check return value of request_region() nobble
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