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| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2010-04-15 19:01:53 +0200 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2010-04-15 19:01:53 +0200 |
| commit | 41b97ab5050088cd23692d578e7294c7be26109a (patch) | |
| tree | 4d98ef5ca872bb275b749ac2306daf72f15bdcb7 /drivers/pcmcia/rsrc_nonstatic.c | |
| parent | b1095afe6fd6ea4c0d9e75489b955f898d6617d9 (diff) | |
| download | lwn-41b97ab5050088cd23692d578e7294c7be26109a.tar.gz lwn-41b97ab5050088cd23692d578e7294c7be26109a.zip | |
pcmcia: fix ioport size calculation in rsrc_nonstatic
Size needs to be calculated after manipulating with the start value.
Reported-by: Komuro <komurojun-mbn@nifty.com>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'drivers/pcmcia/rsrc_nonstatic.c')
| -rw-r--r-- | drivers/pcmcia/rsrc_nonstatic.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/pcmcia/rsrc_nonstatic.c b/drivers/pcmcia/rsrc_nonstatic.c index 1178a823fbc6..a6eb7b59ba9f 100644 --- a/drivers/pcmcia/rsrc_nonstatic.c +++ b/drivers/pcmcia/rsrc_nonstatic.c @@ -810,7 +810,7 @@ static int adjust_memory(struct pcmcia_socket *s, unsigned int action, unsigned static int adjust_io(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end) { struct socket_data *data = s->resource_data; - unsigned long size = end - start + 1; + unsigned long size; int ret = 0; #if defined(CONFIG_X86) @@ -820,6 +820,8 @@ static int adjust_io(struct pcmcia_socket *s, unsigned int action, unsigned long start = 0x100; #endif + size = end - start + 1; + if (end < start) return -EINVAL; |