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| author | Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com> | 2014-02-05 16:20:45 -0200 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-02-11 11:24:46 +1100 |
| commit | 8cc6b6cd8713457be80202fc4264f05d20bc5e1b (patch) | |
| tree | 8c6a3bab4a72bc2d2c86a8cb4d1d514e4f08b99c /arch | |
| parent | 0215b4aa069b989c963d594cf0f1c705e21d8ca5 (diff) | |
| download | linux-stable-8cc6b6cd8713457be80202fc4264f05d20bc5e1b.tar.gz linux-stable-8cc6b6cd8713457be80202fc4264f05d20bc5e1b.tar.bz2 linux-stable-8cc6b6cd8713457be80202fc4264f05d20bc5e1b.zip | |
powerpc/eeh: Drop taken reference to driver on eeh_rmv_device
Commit f5c57710dd62dd06f176934a8b4b8accbf00f9f8 ("powerpc/eeh: Use
partial hotplug for EEH unaware drivers") introduces eeh_rmv_device,
which may grab a reference to a driver, but not release it.
That prevents a driver from being removed after it has gone through EEH
recovery.
This patch drops the reference if it was taken.
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>
Acked-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/kernel/eeh_driver.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel/eeh_driver.c index 7bb30dca4e19..fdc679d309ec 100644 --- a/arch/powerpc/kernel/eeh_driver.c +++ b/arch/powerpc/kernel/eeh_driver.c @@ -362,9 +362,13 @@ static void *eeh_rmv_device(void *data, void *userdata) */ if (!dev || (dev->hdr_type & PCI_HEADER_TYPE_BRIDGE)) return NULL; + driver = eeh_pcid_get(dev); - if (driver && driver->err_handler) - return NULL; + if (driver) { + eeh_pcid_put(dev); + if (driver->err_handler) + return NULL; + } /* Remove it from PCI subsystem */ pr_debug("EEH: Removing %s without EEH sensitive driver\n", |