[PATCH 388/437] EDAC/zynqmp: convert to read/write iterators

Jens Axboe
2024-04-11T15:42:34Z

drivers/edac/zynqmp_edac.c | 26 ++++++++++----------------
1 file changed, 10 insertions(+), 16 deletions(-)

diff --git a/drivers/edac/zynqmp_edac.c b/drivers/edac/zynqmp_edac.c
index 2d9a5cfd8931..53d697b4137a 100644
--- a/drivers/edac/zynqmp_edac.c
+++ b/drivers/edac/zynqmp_edac.c
@@ -247,17 +247,14 @@ static void write_fault_count(struct edac_priv *priv)
* - Write the Correctable Error bit position value:
* echo <bit_pos val> > /sys/kernel/debug/edac/ocm/inject_ce_bitpos
*/
-static ssize_t inject_ce_write(struct file *file, const char __user *data,
- size_t count, loff_t *ppos)
+static ssize_t inject_ce_write(struct kiocb *iocb, struct iov_iter *from)
{
- struct edac_device_ctl_info *edac_dev = file->private_data;
+ struct edac_device_ctl_info *edac_dev = iocb->ki_filp->private_data;
struct edac_priv *priv = edac_dev->pvt_info;
+ size_t count = iov_iter_count(from);
int ret;

- if (!data)
- return -EFAULT;
-
- ret = kstrtou8_from_user(data, count, 0, &priv->ce_bitpos);
+ ret = kstrtou8_from_iter(from, count, 0, &priv->ce_bitpos);
if (ret)
return ret;

@@ -280,7 +277,7 @@ static ssize_t inject_ce_write(struct file *file, const char __user *data,

static const struct file_operations inject_ce_fops = {
.open = simple_open,
- .write = inject_ce_write,
+ .write_iter = inject_ce_write,
.llseek = generic_file_llseek,
};

@@ -291,21 +288,18 @@ static const struct file_operations inject_ce_fops = {
* - Write the Uncorrectable Error bit position values:
* echo <bit_pos0 val>,<bit_pos1 val> > /sys/kernel/debug/edac/ocm/inject_ue_bitpos
*/
-static ssize_t inject_ue_write(struct file *file, const char __user *data,
- size_t count, loff_t *ppos)
+static ssize_t inject_ue_write(struct kiocb *iocb, struct iov_iter *from)
{
- struct edac_device_ctl_info *edac_dev = file->private_data;
+ struct edac_device_ctl_info *edac_dev = iocb->ki_filp->private_data;
struct edac_priv *priv = edac_dev->pvt_info;
char buf[6], *pbuf, *token[2];
+ size_t count = iov_iter_count(from);
u64 ue_bitpos;
int i, ret;
u8 len;

- if (!data)
- return -EFAULT;
-
len = min_t(size_t, count, sizeof(buf));
- if (copy_from_user(buf, data, len))
+ if (!copy_from_iter_full(from, len, from))
return -EFAULT;

buf[len] = '\0';
@@ -342,7 +336,7 @@ static ssize_t inject_ue_write(struct file *file, const char __user *data,

static const struct file_operations inject_ue_fops = {
.open = simple_open,
- .write = inject_ue_write,
+ .write_iter = inject_ue_write,
.llseek = generic_file_llseek,
};

--
2.43.0