Messages in this thread Patch in this message | | | From | nobble <> | Date | Thu, 15 Jun 2017 23:11:59 +0800 | Subject | [PATCH] drivers:pcmcia:m32r_pcc:Check return value of request_region() |
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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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