mtip32xx: use formatting capability of kthread_create_on_node

kthread_create_on_node takes format+args, so there's no need to do the
pretty-printing in advance. Moreover, "mtip_svc_thd_99" (including its
'\0') only just fits in 16 bytes, so if index could ever go above 99
we'd have a stack buffer overflow.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index a28a562f7b7f245355db7d536e0558c78cc7e374..3457ac8c03e2f3cfe10c8a2ccc26f9a706039831 100644 (file)
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -3810,7 +3810,6 @@ static int mtip_block_initialize(struct driver_data *dd)
        sector_t capacity;
        unsigned int index = 0;
        struct kobject *kobj;
-       unsigned char thd_name[16];
 
        if (dd->disk)
                goto skip_create_disk; /* hw init done, before rebuild */
@@ -3958,10 +3957,9 @@ skip_create_disk:
        }
 
 start_service_thread:
-       sprintf(thd_name, "mtip_svc_thd_%02d", index);
        dd->mtip_svc_handler = kthread_create_on_node(mtip_service_thread,
-                                               dd, dd->numa_node, "%s",
-                                               thd_name);
+                                               dd, dd->numa_node,
+                                               "mtip_svc_thd_%02d", index);
 
        if (IS_ERR(dd->mtip_svc_handler)) {
                dev_err(&dd->pdev->dev, "service thread failed to start\n");