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| author | Grant Likely <grant.likely@secretlab.ca> | 2011-05-18 11:19:24 -0600 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2011-05-18 12:32:23 -0600 |
| commit | b1608d69cb804e414d0887140ba08a9398e4e638 (patch) | |
| tree | 8999cd827e7fb4138ff83f7829d8fdcf44ee653d /arch/sparc/kernel/pci_sabre.c | |
| parent | 01294d82622d6d9d64bde8e4530c7e2c6dbb6ee6 (diff) | |
| download | op-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 'arch/sparc/kernel/pci_sabre.c')
| -rw-r--r-- | arch/sparc/kernel/pci_sabre.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/sparc/kernel/pci_sabre.c b/arch/sparc/kernel/pci_sabre.c index 948068a..d1840db 100644 --- a/arch/sparc/kernel/pci_sabre.c +++ b/arch/sparc/kernel/pci_sabre.c @@ -452,8 +452,10 @@ static void __devinit sabre_pbm_init(struct pci_pbm_info *pbm, sabre_scan_bus(pbm, &op->dev); } +static const struct of_device_id sabre_match[]; static int __devinit sabre_probe(struct platform_device *op) { + const struct of_device_id *match; const struct linux_prom64_registers *pr_regs; struct device_node *dp = op->dev.of_node; struct pci_pbm_info *pbm; @@ -463,7 +465,8 @@ static int __devinit sabre_probe(struct platform_device *op) const u32 *vdma; u64 clear_irq; - hummingbird_p = op->dev.of_match && (op->dev.of_match->data != NULL); + match = of_match_device(sabre_match, &op->dev); + hummingbird_p = match && (match->data != NULL); if (!hummingbird_p) { struct device_node *cpu_dp; |
