We previously assumed 'mem_sdio' could be null but it is
dereferenced in ioremap(). Add a check to avoid a potential
null pointer dereference error.
Signed-off-by: Sachin Kamat <sachin.ka...@linaro.org>
---
drivers/mfd/asic3.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/drivers/mfd/asic3.c b/drivers/mfd/asic3.c
index 9f6294f2a070..9fc4186d4132 100644
--- a/drivers/mfd/asic3.c
+++ b/drivers/mfd/asic3.c
@@ -899,13 +899,15 @@ static int __init asic3_mfd_probe(struct platform_device
*pdev,
ds1wm_resources[0].end >>= asic->bus_shift;
/* MMC */
- asic->tmio_cnf = ioremap((ASIC3_SD_CONFIG_BASE >> asic->bus_shift) +
+ if (mem_sdio) {
+ asic->tmio_cnf = ioremap((ASIC3_SD_CONFIG_BASE >>
asic->bus_shift) +
mem_sdio->start,
ASIC3_SD_CONFIG_SIZE >> asic->bus_shift);
- if (!asic->tmio_cnf) {
- ret = -ENOMEM;
- dev_dbg(asic->dev, "Couldn't ioremap SD_CONFIG\n");
- goto out;
+ if (!asic->tmio_cnf) {
+ ret = -ENOMEM;
+ dev_dbg(asic->dev, "Couldn't ioremap SD_CONFIG\n");
+ goto out;
+ }
}
asic3_mmc_resources[0].start >>= asic->bus_shift;
asic3_mmc_resources[0].end >>= asic->bus_shift;
--
1.7.9.5
--
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