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authorSudip Mukherjee <sudipm.mukherjee@gmail.com>2016-12-13 01:40:59 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-13 03:55:06 +0100
commit4170a20f21e734b14317a65baaccc4078eef5198 (patch)
treeb8a6c47d5431016782c8304e57ac11e4c4e5c150 /drivers/pcmcia/m32r_pcc.c
parentm32r: fix build warning (diff)
downloadlinux-4170a20f21e734b14317a65baaccc4078eef5198.tar.xz
linux-4170a20f21e734b14317a65baaccc4078eef5198.zip
drivers/pcmcia/m32r_pcc.c: check return from request_irq
While building m32r allmodconfig we were getting warning: drivers/pcmcia/m32r_pcc.c:331:2: warning: ignoring return value of 'request_irq', declared with attribute warn_unused_result request_irq() can fail and we should always be checking the result from it. Check the result and return it to the caller. Link: http://lkml.kernel.org/r/1474237304-897-1-git-send-email-sudipm.mukherjee@gmail.com Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/pcmcia/m32r_pcc.c')
-rw-r--r--drivers/pcmcia/m32r_pcc.c14
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/pcmcia/m32r_pcc.c b/drivers/pcmcia/m32r_pcc.c
index eb126b98ed8a..fad4455665eb 100644
--- a/drivers/pcmcia/m32r_pcc.c
+++ b/drivers/pcmcia/m32r_pcc.c
@@ -296,10 +296,11 @@ static int __init is_alive(u_short sock)
return 0;
}
-static void add_pcc_socket(ulong base, int irq, ulong mapaddr,
- unsigned int ioaddr)
+static int add_pcc_socket(ulong base, int irq, ulong mapaddr,
+ unsigned int ioaddr)
{
pcc_socket_t *t = &socket[pcc_sockets];
+ int err;
/* add sockets */
t->ioaddr = ioaddr;
@@ -328,11 +329,16 @@ static void add_pcc_socket(ulong base, int irq, ulong mapaddr,
t->socket.irq_mask = 0;
t->socket.pci_irq = 2 + pcc_sockets; /* XXX */
- request_irq(irq, pcc_interrupt, 0, "m32r-pcc", pcc_interrupt);
+ err = request_irq(irq, pcc_interrupt, 0, "m32r-pcc", pcc_interrupt);
+ if (err) {
+ if (t->base > 0)
+ release_region(t->base, 0x20);
+ return err;
+ }
pcc_sockets++;
- return;
+ return 0;
}