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authorGrant Likely <grant.likely@secretlab.ca>2011-05-18 11:19:24 -0600
committerGrant Likely <grant.likely@secretlab.ca>2011-05-18 12:32:23 -0600
commitb1608d69cb804e414d0887140ba08a9398e4e638 (patch)
tree8999cd827e7fb4138ff83f7829d8fdcf44ee653d /drivers/edac
parent01294d82622d6d9d64bde8e4530c7e2c6dbb6ee6 (diff)
downloadop-kernel-dev-b1608d69cb804e414d0887140ba08a9398e4e638.zip
op-kernel-dev-b1608d69cb804e414d0887140ba08a9398e4e638.tar.gz
drivercore: revert addition of of_match to struct device
Commit b826291c, "drivercore/dt: add a match table pointer to struct device" added an of_match pointer to struct device to cache the of_match_table entry discovered at driver match time. This was unsafe because matching is not an atomic operation with probing a driver. If two or more drivers are attempted to be matched to a driver at the same time, then the cached matching entry pointer could get overwritten. This patch reverts the of_match cache pointer and reworks all users to call of_match_device() directly instead. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'drivers/edac')
-rw-r--r--drivers/edac/ppc4xx_edac.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/edac/ppc4xx_edac.c b/drivers/edac/ppc4xx_edac.c
index c1f0045..af8e7b1 100644
--- a/drivers/edac/ppc4xx_edac.c
+++ b/drivers/edac/ppc4xx_edac.c
@@ -1019,7 +1019,7 @@ ppc4xx_edac_mc_init(struct mem_ctl_info *mci,
struct ppc4xx_edac_pdata *pdata = NULL;
const struct device_node *np = op->dev.of_node;
- if (op->dev.of_match == NULL)
+ if (of_match_device(ppc4xx_edac_match, &op->dev) == NULL)
return -EINVAL;
/* Initial driver pointers and private data */
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