diff options
| author | Jerome Brunet <jbrunet@baylibre.com> | 2017-12-21 19:30:54 +0300 |
|---|---|---|
| committer | Stephen Boyd <sboyd@codeaurora.org> | 2017-12-29 02:16:04 +0300 |
| commit | 12a26c298d2a8b1cab498533fa65198e49e3afd3 (patch) | |
| tree | 131818a7e5b13dbb5d8556017ff06354415d097e /drivers/clk/hisilicon | |
| parent | 4fbd8d194f06c8a3fd2af1ce560ddb31f7ec8323 (diff) | |
| download | linux-12a26c298d2a8b1cab498533fa65198e49e3afd3.tar.xz | |
clk: divider: fix incorrect usage of container_of
divider_recalc_rate() is an helper function used by clock divider of
different types, so the structure containing the 'hw' pointer is not
always a 'struct clk_divider'
At the following line:
> div = _get_div(table, val, flags, divider->width);
in several cases, the value of 'divider->width' is garbage as the actual
structure behind this memory is not a 'struct clk_divider'
Fortunately, this width value is used by _get_val() only when
CLK_DIVIDER_MAX_AT_ZERO flag is set. This has never been the case so
far when the structure is not a 'struct clk_divider'. This is probably
why we did not notice this bug before
Fixes: afe76c8fd030 ("clk: allow a clk divider with max divisor when zero")
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Sylvain Lemieux <slemieux.tyco@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Diffstat (limited to 'drivers/clk/hisilicon')
| -rw-r--r-- | drivers/clk/hisilicon/clkdivider-hi6220.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/clk/hisilicon/clkdivider-hi6220.c b/drivers/clk/hisilicon/clkdivider-hi6220.c index a1c1f684ad58..9f46cf9dcc65 100644 --- a/drivers/clk/hisilicon/clkdivider-hi6220.c +++ b/drivers/clk/hisilicon/clkdivider-hi6220.c @@ -56,7 +56,7 @@ static unsigned long hi6220_clkdiv_recalc_rate(struct clk_hw *hw, val &= div_mask(dclk->width); return divider_recalc_rate(hw, parent_rate, val, dclk->table, - CLK_DIVIDER_ROUND_CLOSEST); + CLK_DIVIDER_ROUND_CLOSEST, dclk->width); } static long hi6220_clkdiv_round_rate(struct clk_hw *hw, unsigned long rate, |