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| author | Gregory CLEMENT <gregory.clement@free-electrons.com> | 2014-01-20 15:59:50 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-02-13 13:55:30 -0800 |
| commit | 930deb9852d7cb29be1a9836723ddd86946c0b0a (patch) | |
| tree | d4cc722e577f81f7be2334ada54b30801ee40fa6 | |
| parent | c588a2e83c793ddf4811c57a347916ddccb7060a (diff) | |
| download | lwn-930deb9852d7cb29be1a9836723ddd86946c0b0a.tar.gz lwn-930deb9852d7cb29be1a9836723ddd86946c0b0a.zip | |
ARM: mvebu: Fix kernel hang in mvebu_soc_id_init() when of_iomap failed
commit dc4910d9e93f8cc56b190dd8fc9e789135978216 upstream.
When pci_base is accessed whereas it has not been properly mapped by
of_iomap() the kernel hang. The check of this pointer made an improper
use of IS_ERR() instead of comparing to NULL. This patch fix this
issue.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Reported-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Fixes: 930ab3d403ae (i2c: mv64xxx: Add I2C Transaction Generator support)
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/arm/mach-mvebu/mvebu-soc-id.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/mach-mvebu/mvebu-soc-id.c b/arch/arm/mach-mvebu/mvebu-soc-id.c index fe4fc1cbdfaf..f3b325f6cbd4 100644 --- a/arch/arm/mach-mvebu/mvebu-soc-id.c +++ b/arch/arm/mach-mvebu/mvebu-soc-id.c @@ -88,7 +88,7 @@ static int __init mvebu_soc_id_init(void) } pci_base = of_iomap(child, 0); - if (IS_ERR(pci_base)) { + if (pci_base == NULL) { pr_err("cannot map registers\n"); ret = -ENOMEM; goto res_ioremap; |