Currently, vc5_pll_recalc_rate() may produce incorrect output when
regmap_bulk_read() fails. The fix checks the return value of the
latter function and returns 0 in case of failure.
Signed-off-by: Aditya Pakki <pakki...@umn.edu>
---
drivers/clk/clk-versaclock5.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/clk/clk-versaclock5.c b/drivers/clk/clk-versaclock5.c
index decffb3826ec..cd76a893c594 100644
--- a/drivers/clk/clk-versaclock5.c
+++ b/drivers/clk/clk-versaclock5.c
@@ -413,7 +413,8 @@ static unsigned long vc5_pll_recalc_rate(struct clk_hw *hw,
u32 div_int, div_frc;
u8 fb[5];
- regmap_bulk_read(vc5->regmap, VC5_FEEDBACK_INT_DIV, fb, 5);
+ if (regmap_bulk_read(vc5->regmap, VC5_FEEDBACK_INT_DIV, fb, 5))
+ return 0;
div_int = (fb[0] << 4) | (fb[1] >> 4);
div_frc = (fb[2] << 16) | (fb[3] << 8) | fb[4];
--
2.17.1
