IB/qib: Fix txselect regression

Commit 7fac33014f54("IB/qib: checkpatch fixes") was overzealous in
removing a simple_strtoul for a parse routine, setup_txselect().  That
routine is required to handle a multi-value string.

Unwind that aspect of the fix.

Cc: <stable@vger.kernel.org>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

1 files changed, 5 insertions, 6 deletions

diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c
index 016e7429adf6..5bfc02f450e6 100644
--- a/drivers/infiniband/hw/qib/qib_iba7322.c
+++ b/drivers/infiniband/hw/qib/qib_iba7322.c
@@ -6190,21 +6190,20 @@ static int setup_txselect(const char *str, struct kernel_param *kp)
 {
         struct qib_devdata *dd;
         unsigned long val;
-        int ret;
-
+        char *n;
         if (strlen(str) >= MAX_ATTEN_LEN) {
                 pr_info("txselect_values string too long\n");
                 return -ENOSPC;
         }
-        ret = kstrtoul(str, 0, &val);
-        if (ret || val >= (TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ +
+        val = simple_strtoul(str, &n, 0);
+        if (n == str || val >= (TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ +
                                 TXDDS_MFG_SZ)) {
                 pr_info("txselect_values must start with a number < %d\n",
                         TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ + TXDDS_MFG_SZ);
-                return ret ? ret : -EINVAL;
+                return -EINVAL;
         }
-
         strcpy(txselect_list, str);
+
         list_for_each_entry(dd, &qib_dev_list, list)
                 if (dd->deviceid == PCI_DEVICE_ID_QLOGIC_IB_7322)
                         set_no_qsfp_atten(dd, 1);