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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2019-01-15 22:46:25 +0300 |
|---|---|---|
| committer | Stephen Boyd <sboyd@kernel.org> | 2019-01-24 11:23:32 -0800 |
| commit | 303aef8b84272d73999a3207dd05bbe10ed89dc5 (patch) | |
| tree | 1fe00e13f1110eab24421a9bd156d17528076df3 /drivers/clk/ti/divider.c | |
| parent | a64a9c088b75cba5840320d57e0bbfb36739c3b5 (diff) | |
| download | linux-stable-303aef8b84272d73999a3207dd05bbe10ed89dc5.tar.gz linux-stable-303aef8b84272d73999a3207dd05bbe10ed89dc5.tar.bz2 linux-stable-303aef8b84272d73999a3207dd05bbe10ed89dc5.zip | |
clk: ti: Fix error handling in ti_clk_parse_divider_data()
The ti_clk_parse_divider_data() function is only called from
_get_div_table_from_setup(). That function doesn't look at the return
value but instead looks at the "*table" pointer. In this case, if the
kcalloc() fails then *table is NULL (which means success). It should
instead be an error pointer.
The ti_clk_parse_divider_data() function has two callers. One checks
for errors and the other doesn't. I have fixed it so now both handle
errors.
Fixes: 4f6be5655dc9 ("clk: ti: divider: add driver internal API for parsing divider data")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Diffstat (limited to 'drivers/clk/ti/divider.c')
| -rw-r--r-- | drivers/clk/ti/divider.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/clk/ti/divider.c b/drivers/clk/ti/divider.c index 8d77090ad94a..0241450f3eb3 100644 --- a/drivers/clk/ti/divider.c +++ b/drivers/clk/ti/divider.c @@ -403,8 +403,10 @@ int ti_clk_parse_divider_data(int *div_table, int num_dividers, int max_div, num_dividers = i; tmp = kcalloc(valid_div + 1, sizeof(*tmp), GFP_KERNEL); - if (!tmp) + if (!tmp) { + *table = ERR_PTR(-ENOMEM); return -ENOMEM; + } valid_div = 0; *width = 0; @@ -439,6 +441,7 @@ struct clk_hw *ti_clk_build_component_div(struct ti_clk_divider *setup) { struct clk_omap_divider *div; struct clk_omap_reg *reg; + int ret; if (!setup) return NULL; @@ -458,6 +461,12 @@ struct clk_hw *ti_clk_build_component_div(struct ti_clk_divider *setup) div->flags |= CLK_DIVIDER_POWER_OF_TWO; div->table = _get_div_table_from_setup(setup, &div->width); + if (IS_ERR(div->table)) { + ret = PTR_ERR(div->table); + kfree(div); + return ERR_PTR(ret); + } + div->shift = setup->bit_shift; div->latch = -EINVAL; |