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clk: scpi: fix return type of __scpi_dvfs_round_rate

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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: cd52c2a4b5 ("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>
This commit is contained in:
Sudeep Holla 2017-05-18 17:19:28 +01:00 committed by Stephen Boyd
parent 80b4ae7ace
commit 7374aec956
1 changed files with 3 additions and 3 deletions
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6
drivers/clk/clk-scpi.c
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@ -71,15 +71,15 @@ static const struct clk_ops scpi_clk_ops = {
}; };
/* find closest match to given frequency in OPP table */ /* 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; int idx;
u32 fmin = 0, fmax = ~0, ftmp; unsigned long fmin = 0, fmax = ~0, ftmp;
const struct scpi_opp *opp = clk->info->opps; const struct scpi_opp *opp = clk->info->opps;
for (idx = 0; idx < clk->info->count; idx++, opp++) { for (idx = 0; idx < clk->info->count; idx++, opp++) {
ftmp = opp->freq; ftmp = opp->freq;
if (ftmp >= (u32)rate) { if (ftmp >= rate) {
if (ftmp <= fmax) if (ftmp <= fmax)
fmax = ftmp; fmax = ftmp;
break; break;