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path: root/drivers/dma/ppc4xx/adma.c
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Diffstat (limited to 'drivers/dma/ppc4xx/adma.c')
-rw-r--r--drivers/dma/ppc4xx/adma.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/dma/ppc4xx/adma.c b/drivers/dma/ppc4xx/adma.c
index df7704053d91..e2b5129c5f84 100644
--- a/drivers/dma/ppc4xx/adma.c
+++ b/drivers/dma/ppc4xx/adma.c
@@ -4319,6 +4319,7 @@ static ssize_t enable_store(struct device_driver *dev, const char *buf,
size_t count)
{
unsigned long val;
+ int err;
if (!count || count > 11)
return -EINVAL;
@@ -4327,7 +4328,10 @@ static ssize_t enable_store(struct device_driver *dev, const char *buf,
return -EFAULT;
/* Write a key */
- sscanf(buf, "%lx", &val);
+ err = kstrtoul(buf, 16, &val);
+ if (err)
+ return err;
+
dcr_write(ppc440spe_mq_dcr_host, DCRN_MQ0_XORBA, val);
isync();
@@ -4368,7 +4372,7 @@ static ssize_t poly_store(struct device_driver *dev, const char *buf,
size_t count)
{
unsigned long reg, val;
-
+ int err;
#ifdef CONFIG_440SP
/* 440SP uses default 0x14D polynomial only */
return -EINVAL;
@@ -4378,7 +4382,9 @@ static ssize_t poly_store(struct device_driver *dev, const char *buf,
return -EINVAL;
/* e.g., 0x14D or 0x11D */
- sscanf(buf, "%lx", &val);
+ err = kstrtoul(buf, 16, &val);
+ if (err)
+ return err;
if (val & ~0x1FF)
return -EINVAL;