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clk: qcom: Allocate space for NULL terimation in DFS table 

The table allocated in clk_rcg2_dfs_populate_freq_table() is
eventually iterated over by qcom_find_freq() which assumes that the
table is NULL terminated.  Allocate one extra space in the array for
the NULL termination.  Initting of the NULL termination is implicit
due to kcalloc().

Fixes: cc4f6944d0 ("clk: qcom: Add support for RCG to register for DFS")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Douglas Anderson 2018-08-30 10:34:37 -07:00 committed by Stephen Boyd
parent 8b69c6dba2
commit 2bdb2a1cca
1 changed files with 2 additions and 1 deletions
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3
drivers/clk/qcom/clk-rcg2.c
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@ -993,7 +993,8 @@ static int clk_rcg2_dfs_populate_freq_table(struct clk_rcg2 *rcg)
struct freq_tbl *freq_tbl;
int i;
freq_tbl = kcalloc(MAX_PERF_LEVEL, sizeof(*freq_tbl), GFP_KERNEL);
/* Allocate space for 1 extra since table is NULL terminated */
freq_tbl = kcalloc(MAX_PERF_LEVEL + 1, sizeof(*freq_tbl), GFP_KERNEL);
if (!freq_tbl)
return -ENOMEM;
rcg->freq_tbl = freq_tbl;