[PATCH] clk: scpi: fix return type of __scpi_dvfs_round_rate

[Sudeep Holla]

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 <mturque...@baylibre.com>
Cc: Stephen Boyd <sb...@codeaurora.org>
Signed-off-by: Sudeep Holla <sudeep.ho...@arm.com>
---
 drivers/clk/clk-scpi.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

Hi,

Sorry for the stupid bug, just noticed the issue running on software
models with the frequency of 2.4 GHz. Not noticed so far as never ran
this on a system above 1.2 GHz so far :(

Regards,
Sudeep

diff --git a/drivers/clk/clk-scpi.c b/drivers/clk/clk-scpi.c
index 96d37175d0ad..8ad458b5ad6e 100644
--- 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;
--
2.7.4