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authorJiri Slaby <jslaby@novell.com>2009-12-09 23:34:13 +0300
committerGreg Kroah-Hartman <gregkh@suse.de>2010-03-03 01:43:11 +0300
commita357e777b5982d5f460a2783d697a8a90d497348 (patch)
treee26b86b5a0dc9c7c8f5b0b3470e8e8301e577c3c /drivers/char
parent1e091751cdb2c28f9f25041be0dcb4d33e4a833d (diff)
downloadlinux-a357e777b5982d5f460a2783d697a8a90d497348.tar.xz
serial: Char: cyclades, fix compiler warning
With gcc 4.0.2: drivers/char/cyclades.c: In function 'cyy_interrupt': drivers/char/cyclades.c:581: warning: 'info' may be used uninitialized in this function introduced by : commit 3aeea5b92210083c7cffd4f08a0bb141d3f2d574 : Author: Jiri Slaby <jirislaby@gmail.com> : AuthorDate: Sat Sep 19 13:13:16 2009 -0700 : Commit: Live-CD User <linux@linux.site> : CommitDate: Sat Sep 19 13:13:16 2009 -0700 : : cyclades: introduce cyy_readb/writeb In fact the true branch which uses uninitialized 'info' can never happen because chip is always less than ->nchips and channel is always less than 4 which we alloc. So behave similar to rx handling and remove the test completely. I wonder why gcc 4.4.1 doesn't spit a word. Reported-by: Andrew Morton <akpm@linux-foundation.org> Cc: Alan Cox <alan@linux.intel.com> Signed-off-by: Jiri Slaby <jslaby@novell.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/cyclades.c6
1 files changed, 0 insertions, 6 deletions
diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c
index 4254457d3911..274e9651fa36 100644
--- a/drivers/char/cyclades.c
+++ b/drivers/char/cyclades.c
@@ -598,12 +598,6 @@ static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip,
save_car = readb(base_addr + (CyCAR << index));
cy_writeb(base_addr + (CyCAR << index), save_xir);
- /* validate the port# (as configured and open) */
- if (channel + chip * 4 >= cinfo->nports) {
- cy_writeb(base_addr + (CySRER << index),
- readb(base_addr + (CySRER << index)) & ~CyTxRdy);
- goto end;
- }
info = &cinfo->ports[channel + chip * 4];
tty = tty_port_tty_get(&info->port);
if (tty == NULL) {