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authorJerome Brunet <jbrunet@baylibre.com>2017-12-21 17:30:54 +0100
committerStephen Boyd <sboyd@codeaurora.org>2017-12-28 15:16:04 -0800
commit12a26c298d2a8b1cab498533fa65198e49e3afd3 (patch)
tree131818a7e5b13dbb5d8556017ff06354415d097e /drivers/clk/sunxi-ng
parent4fbd8d194f06c8a3fd2af1ce560ddb31f7ec8323 (diff)
downloadlinux-12a26c298d2a8b1cab498533fa65198e49e3afd3.tar.bz2
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/sunxi-ng')
-rw-r--r--drivers/clk/sunxi-ng/ccu_div.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/clk/sunxi-ng/ccu_div.c b/drivers/clk/sunxi-ng/ccu_div.c
index baa3cf96507b..302a18efd39f 100644
--- a/drivers/clk/sunxi-ng/ccu_div.c
+++ b/drivers/clk/sunxi-ng/ccu_div.c
@@ -71,7 +71,7 @@ static unsigned long ccu_div_recalc_rate(struct clk_hw *hw,
parent_rate);
val = divider_recalc_rate(hw, parent_rate, val, cd->div.table,
- cd->div.flags);
+ cd->div.flags, cd->div.width);
if (cd->common.features & CCU_FEATURE_FIXED_POSTDIV)
val /= cd->fixed_post_div;