[PATCH] ata: sata_fsl: fix sscanf() and sysfs_emit() format strings
Damien Le Moal
damien.lemoal at opensource.wdc.com
Tue Feb 8 17:46:01 AEDT 2022
Use the %u format for unsigned int parameters handling with sscanf() and
sysfs_emit() to avoid compilation warnings. In
fsl_sata_rx_watermark_store(), the call to sscanf() to parse a single
argument is replaced with a call to kstrtouint().
While at it, also replace the printk(KERN_ERR) calls with dev_err()
calls and fix blank lines in fsl_sata_rx_watermark_store().
Reported-by: kernel test robot <lkp at intel.com>
Signed-off-by: Damien Le Moal <damien.lemoal at opensource.wdc.com>
---
drivers/ata/sata_fsl.c | 16 +++++++---------
1 file changed, 7 insertions(+), 9 deletions(-)
diff --git a/drivers/ata/sata_fsl.c b/drivers/ata/sata_fsl.c
index da0152116d9f..556034a15430 100644
--- a/drivers/ata/sata_fsl.c
+++ b/drivers/ata/sata_fsl.c
@@ -322,7 +322,7 @@ static void fsl_sata_set_irq_coalescing(struct ata_host *host,
static ssize_t fsl_sata_intr_coalescing_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- return sysfs_emit(buf, "%d %d\n",
+ return sysfs_emit(buf, "%u %u\n",
intr_coalescing_count, intr_coalescing_ticks);
}
@@ -332,10 +332,8 @@ static ssize_t fsl_sata_intr_coalescing_store(struct device *dev,
{
unsigned int coalescing_count, coalescing_ticks;
- if (sscanf(buf, "%d%d",
- &coalescing_count,
- &coalescing_ticks) != 2) {
- printk(KERN_ERR "fsl-sata: wrong parameter format.\n");
+ if (sscanf(buf, "%u%u", &coalescing_count, &coalescing_ticks) != 2) {
+ dev_err(dev, "fsl-sata: wrong parameter format.\n");
return -EINVAL;
}
@@ -359,7 +357,7 @@ static ssize_t fsl_sata_rx_watermark_show(struct device *dev,
rx_watermark &= 0x1f;
spin_unlock_irqrestore(&host->lock, flags);
- return sysfs_emit(buf, "%d\n", rx_watermark);
+ return sysfs_emit(buf, "%u\n", rx_watermark);
}
static ssize_t fsl_sata_rx_watermark_store(struct device *dev,
@@ -373,8 +371,8 @@ static ssize_t fsl_sata_rx_watermark_store(struct device *dev,
void __iomem *csr_base = host_priv->csr_base;
u32 temp;
- if (sscanf(buf, "%d", &rx_watermark) != 1) {
- printk(KERN_ERR "fsl-sata: wrong parameter format.\n");
+ if (kstrtouint(buf, 10, &rx_watermark) < 0) {
+ dev_err(dev, "fsl-sata: wrong parameter format.\n");
return -EINVAL;
}
@@ -382,8 +380,8 @@ static ssize_t fsl_sata_rx_watermark_store(struct device *dev,
temp = ioread32(csr_base + TRANSCFG);
temp &= 0xffffffe0;
iowrite32(temp | rx_watermark, csr_base + TRANSCFG);
-
spin_unlock_irqrestore(&host->lock, flags);
+
return strlen(buf);
}
--
2.34.1
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