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Commit 72ad6c93 authored by Prasad Sodagudi's avatar Prasad Sodagudi Committed by Mohammed Khajapasha
Browse files

qcom: PMRESR register read returns zero for un supported group events 



Kryo has 3 groups of events PMRESR0, 1, 2. If kryo_read_pmresr()
is asked to read other than these 3 event groups, return ZERO value.

Change-Id: Ifa348baa749182bb0dcb67562195472699301b1a
Signed-off-by: default avatarPrasad Sodagudi <psodagud@codeaurora.org>
Signed-off-by: default avatarMohammed Khajapasha <mkhaja@codeaurora.org>
parent 7d78f564

drivers/soc/qcom/perf_event_kryo.c

+7 −6
Original line number Diff line number Diff line
@@ -118,12 +118,7 @@ static void kryo_write_pmresr(int reg, int l_h, u32 val) 


static u32 kryo_read_pmresr(int reg, int l_h)

{

	u32 val;



	if (reg > KRYO_MAX_L1_REG) {

		pr_err("Invalid read of RESR reg %d\n", reg);

		return 0;

	}

	u32 val = 0;



	if (l_h == RESR_L) {

		switch (reg) {
@@ -136,6 +131,9 @@ static u32 kryo_read_pmresr(int reg, int l_h) 
		case 2:

			asm volatile("mrs %0, " pmresr2l_el0 : "=r" (val));

			break;

		default:

			WARN_ONCE(1, "Invalid read of RESR reg %d\n", reg);

			break;

		}

	} else {

		switch (reg) {
@@ -148,6 +146,9 @@ static u32 kryo_read_pmresr(int reg, int l_h) 
		case 2:

			asm volatile("mrs %0," pmresr2h_el0 : "=r" (val));

			break;

		default:

			WARN_ONCE(1, "Invalid read of RESR reg %d\n", reg);

			break;

		}

	}