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authorroel kluin <roel.kluin@gmail.com>2008-11-29 01:17:27 +0000
committerPaul Mackerras <paulus@samba.org>2008-12-03 21:04:02 +1100
commit2fd091f3eebc5accefa5f77ff04436982765d15c (patch)
treebb7f52a42dcf5d7291bf2a1b2ac51da52330529f /drivers
parente6a437eba09f1c3505bedf7a9a9766a878ca09fa (diff)
powerpc/macintosh: Fix unsigned check in smu_sat_get_sdb_partition()
i2c_smbus_read_word_data() returns a s32, which may be negative but unsigned len cannot be negative. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/macintosh/windfarm_smu_sat.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/macintosh/windfarm_smu_sat.c b/drivers/macintosh/windfarm_smu_sat.c
index 7f2be4baaed..7847e981ac3 100644
--- a/drivers/macintosh/windfarm_smu_sat.c
+++ b/drivers/macintosh/windfarm_smu_sat.c
@@ -87,11 +87,12 @@ struct smu_sdbp_header *smu_sat_get_sdb_partition(unsigned int sat_id, int id,
return NULL;
}
- len = i2c_smbus_read_word_data(&sat->i2c, 9);
- if (len < 0) {
+ err = i2c_smbus_read_word_data(&sat->i2c, 9);
+ if (err < 0) {
printk(KERN_ERR "smu_sat_get_sdb_part rd len error\n");
return NULL;
}
+ len = err;
if (len == 0) {
printk(KERN_ERR "smu_sat_get_sdb_part no partition %x\n", id);
return NULL;