4.9-stable review patch. If anyone has any objections, please let me know.
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From: Sudeep Holla sudeep.holla@arm.com
[ Upstream commit 7374aec95636ca39409545eba4ef5ff3125c2346 ]
The frequencies above the maximum value of signed integer(i.e. 2^31 -1) will overflow with the current code.
This patch fixes the return type of __scpi_dvfs_round_rate from 'int' to 'unsigned long'.
Fixes: cd52c2a4b5c4 ("clk: add support for clocks provided by SCP(System Control Processor)") Cc: Michael Turquette mturquette@baylibre.com Cc: Stephen Boyd sboyd@codeaurora.org Signed-off-by: Sudeep Holla sudeep.holla@arm.com Signed-off-by: Stephen Boyd sboyd@codeaurora.org Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/clk/clk-scpi.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/clk/clk-scpi.c +++ b/drivers/clk/clk-scpi.c @@ -71,15 +71,15 @@ static const struct clk_ops scpi_clk_ops };
/* find closest match to given frequency in OPP table */ -static int __scpi_dvfs_round_rate(struct scpi_clk *clk, unsigned long rate) +static long __scpi_dvfs_round_rate(struct scpi_clk *clk, unsigned long rate) { int idx; - u32 fmin = 0, fmax = ~0, ftmp; + unsigned long fmin = 0, fmax = ~0, ftmp; const struct scpi_opp *opp = clk->info->opps;
for (idx = 0; idx < clk->info->count; idx++, opp++) { ftmp = opp->freq; - if (ftmp >= (u32)rate) { + if (ftmp >= rate) { if (ftmp <= fmax) fmax = ftmp; break;