Merge tag 'gcc-plugins-v5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git...

[linux-2.6-microblaze.git] / drivers / firmware / arm_sdei.c

diff --git a/drivers/firmware/arm_sdei.c b/drivers/firmware/arm_sdei.c
index 840754d..a7e762c 100644 (file)
--- a/drivers/firmware/arm_sdei.c
+++ b/drivers/firmware/arm_sdei.c
@@ -31,7 +31,6 @@
 #include <linux/slab.h>
 #include <linux/smp.h>
 #include <linux/spinlock.h>
-#include <linux/uaccess.h>
 
 /*
  * The call to use to reach the firmware.
@@ -1092,26 +1091,13 @@ int sdei_event_handler(struct pt_regs *regs,
                       struct sdei_registered_event *arg)
 {
        int err;
-       mm_segment_t orig_addr_limit;
        u32 event_num = arg->event_num;
 
-       /*
-        * Save restore 'fs'.
-        * The architecture's entry code save/restores 'fs' when taking an
-        * exception from the kernel. This ensures addr_limit isn't inherited
-        * if you interrupted something that allowed the uaccess routines to
-        * access kernel memory.
-        * Do the same here because this doesn't come via the same entry code.
-       */
-       orig_addr_limit = force_uaccess_begin();
-
        err = arg->callback(event_num, regs, arg->callback_arg);
        if (err)
                pr_err_ratelimited("event %u on CPU %u failed with error: %d\n",
                                   event_num, smp_processor_id(), err);
 
-       force_uaccess_end(orig_addr_limit);
-
        return err;
 }
 NOKPROBE_SYMBOL(sdei_event_handler);