alpha: Use pr_warn instead of pr_warning

As said in commit f2c2cbcc35d4 ("powerpc: Use pr_warn instead of
pr_warning"), removing pr_warning so all logging messages use a
consistent <prefix>_warn style. Let's do it.

Link: http://lkml.kernel.org/r/20191018031850.48498-1-wangkefeng.wang@huawei.com
To: linux-kernel@vger.kernel.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
diff --git a/arch/alpha/kernel/perf_event.c b/arch/alpha/kernel/perf_event.c
index 4341ccf..e7a59d9 100644
--- a/arch/alpha/kernel/perf_event.c
+++ b/arch/alpha/kernel/perf_event.c
@@ -824,7 +824,7 @@ static void alpha_perf_event_irq_handler(unsigned long la_ptr,
 	if (unlikely(la_ptr >= alpha_pmu->num_pmcs)) {
 		/* This should never occur! */
 		irq_err_count++;
-		pr_warning("PMI: silly index %ld\n", la_ptr);
+		pr_warn("PMI: silly index %ld\n", la_ptr);
 		wrperfmon(PERFMON_CMD_ENABLE, cpuc->idx_mask);
 		return;
 	}
@@ -847,7 +847,7 @@ static void alpha_perf_event_irq_handler(unsigned long la_ptr,
 	if (unlikely(!event)) {
 		/* This should never occur! */
 		irq_err_count++;
-		pr_warning("PMI: No event at index %d!\n", idx);
+		pr_warn("PMI: No event at index %d!\n", idx);
 		wrperfmon(PERFMON_CMD_ENABLE, cpuc->idx_mask);
 		return;
 	}