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pcmcia: preserve configuration information if request_io fails partly 

If pcmcia_request_io() only fails partly -- for the second of two
requested resources -- preserve the configuration settings for the
first one.

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
hifive-unleashed-5.1
Dominik Brodowski 2010-09-18 10:19:13 +02:00
parent 151b6a5f1d
commit 7cdffc8652
1 changed files with 6 additions and 0 deletions
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6
drivers/pcmcia/pcmcia_resource.c
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@ -595,7 +595,13 @@ int pcmcia_request_io(struct pcmcia_device *p_dev)
if (c->io[1].end) {
ret = alloc_io_space(s, &c->io[1], p_dev->io_lines);
if (ret) {
struct resource tmp = c->io[0];
/* release the previously allocated resource */
release_io_space(s, &c->io[0]);
/* but preserve the settings, for they worked... */
c->io[0].end = resource_size(&tmp);
c->io[0].start = tmp.start;
c->io[0].flags = tmp.flags;
goto out;
}
} else