iwlwifi: pcie: use kstrtou32_from_user()

Use kstrtou32_from_user() in debugfs instead of open-coding it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
index 280b14ace175a94161e0c3cea466fd1e0080c9c1..67343b10b0da28993bfbb6ec906110408855cee5 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
@@ -2428,17 +2428,12 @@ static ssize_t iwl_dbgfs_interrupt_write(struct file *file,
        struct iwl_trans *trans = file->private_data;
        struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
        struct isr_statistics *isr_stats = &trans_pcie->isr_stats;
-
-       char buf[8];
-       int buf_size;
        u32 reset_flag;
+       int ret;
 
-       memset(buf, 0, sizeof(buf));
-       buf_size = min(count, sizeof(buf) -  1);
-       if (copy_from_user(buf, user_buf, buf_size))
-               return -EFAULT;
-       if (sscanf(buf, "%x", &reset_flag) != 1)
-               return -EFAULT;
+       ret = kstrtou32_from_user(user_buf, count, 16, &reset_flag);
+       if (ret)
+               return ret;
        if (reset_flag == 0)
                memset(isr_stats, 0, sizeof(*isr_stats));