* [PATCH] mmc: meson-gx: fix __ffsdi2 undefined on arm32 [not found] <201708310823.lfxGt2Kh%fengguang.wu@intel.com> @ 2017-08-31 9:29 ` Jerome Brunet 2017-08-31 10:45 ` Ulf Hansson 0 siblings, 1 reply; 2+ messages in thread From: Jerome Brunet @ 2017-08-31 9:29 UTC (permalink / raw) To: linus-amlogic Using __bf_shf does not compile on arm 32 architecture. This has gone unnoticed till now cause the driver is only used on arm64. In addition, __bf_shf was already used in the driver without any issue. It was used on a constant value, so the call was probably optimized away. Replace __bf_shf by __ffs fixes the problem Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> --- Hi Ulf, Sorry for not catching this earlier. If you still intend to keep the series applied in next, here is a fixup patch to squash with the offending commit during your rebase. Regards Jerome drivers/mmc/host/meson-gx-mmc.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c index 2fa18faa7f0f..7d7aa2389b7c 100644 --- a/drivers/mmc/host/meson-gx-mmc.c +++ b/drivers/mmc/host/meson-gx-mmc.c @@ -201,13 +201,13 @@ static int meson_mmc_clk_get_phase(struct clk_hw *hw) u32 val; val = readl(mmc->reg); - p = (val & mmc->phase_mask) >> __bf_shf(mmc->phase_mask); + p = (val & mmc->phase_mask) >> __ffs(mmc->phase_mask); degrees = p * 360 / phase_num; if (mmc->delay_mask) { period_ps = DIV_ROUND_UP((unsigned long)NSEC_PER_SEC * 1000, clk_get_rate(hw->clk)); - d = (val & mmc->delay_mask) >> __bf_shf(mmc->delay_mask); + d = (val & mmc->delay_mask) >> __ffs(mmc->delay_mask); degrees += d * mmc->delay_step_ps * 360 / period_ps; degrees %= 360; } @@ -223,11 +223,11 @@ static void meson_mmc_apply_phase_delay(struct meson_mmc_phase *mmc, val = readl(mmc->reg); val &= ~mmc->phase_mask; - val |= phase << __bf_shf(mmc->phase_mask); + val |= phase << __ffs(mmc->phase_mask); if (mmc->delay_mask) { val &= ~mmc->delay_mask; - val |= delay << __bf_shf(mmc->delay_mask); + val |= delay << __ffs(mmc->delay_mask); } writel(val, mmc->reg); @@ -254,7 +254,7 @@ static int meson_mmc_clk_set_phase(struct clk_hw *hw, int degrees) r = do_div(p, 360 / phase_num); d = DIV_ROUND_CLOSEST(r * period_ps, 360 * mmc->delay_step_ps); - d = min(d, mmc->delay_mask >> __bf_shf(mmc->delay_mask)); + d = min(d, mmc->delay_mask >> __ffs(mmc->delay_mask)); } meson_mmc_apply_phase_delay(mmc, p, d); @@ -518,7 +518,7 @@ static int meson_mmc_clk_init(struct meson_host *host) init.num_parents = MUX_CLK_NUM_PARENTS; mux->reg = host->regs + SD_EMMC_CLOCK; - mux->shift = __bf_shf(CLK_SRC_MASK); + mux->shift = __ffs(CLK_SRC_MASK); mux->mask = CLK_SRC_MASK >> mux->shift; mux->hw.init = &init; @@ -540,7 +540,7 @@ static int meson_mmc_clk_init(struct meson_host *host) init.num_parents = 1; div->reg = host->regs + SD_EMMC_CLOCK; - div->shift = __bf_shf(CLK_DIV_MASK); + div->shift = __ffs(CLK_DIV_MASK); div->width = __builtin_popcountl(CLK_DIV_MASK); div->hw.init = &init; div->flags = (CLK_DIVIDER_ONE_BASED | -- 2.9.5 ^ permalink raw reply [flat|nested] 2+ messages in thread
* [PATCH] mmc: meson-gx: fix __ffsdi2 undefined on arm32 2017-08-31 9:29 ` [PATCH] mmc: meson-gx: fix __ffsdi2 undefined on arm32 Jerome Brunet @ 2017-08-31 10:45 ` Ulf Hansson 0 siblings, 0 replies; 2+ messages in thread From: Ulf Hansson @ 2017-08-31 10:45 UTC (permalink / raw) To: linus-amlogic On 31 August 2017 at 11:29, Jerome Brunet <jbrunet@baylibre.com> wrote: > Using __bf_shf does not compile on arm 32 architecture. > This has gone unnoticed till now cause the driver is only used on arm64. > > In addition, __bf_shf was already used in the driver without any issue. > It was used on a constant value, so the call was probably optimized > away. > > Replace __bf_shf by __ffs fixes the problem > > Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Thanks, applied for next! > --- > > Hi Ulf, > > Sorry for not catching this earlier. > If you still intend to keep the series applied in next, here is a fixup patch > to squash with the offending commit during your rebase. I decided to put it on top. Thanks for posting the fixup quickly. Kind regards Uffe > > Regards > Jerome > > drivers/mmc/host/meson-gx-mmc.c | 14 +++++++------- > 1 file changed, 7 insertions(+), 7 deletions(-) > > diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c > index 2fa18faa7f0f..7d7aa2389b7c 100644 > --- a/drivers/mmc/host/meson-gx-mmc.c > +++ b/drivers/mmc/host/meson-gx-mmc.c > @@ -201,13 +201,13 @@ static int meson_mmc_clk_get_phase(struct clk_hw *hw) > u32 val; > > val = readl(mmc->reg); > - p = (val & mmc->phase_mask) >> __bf_shf(mmc->phase_mask); > + p = (val & mmc->phase_mask) >> __ffs(mmc->phase_mask); > degrees = p * 360 / phase_num; > > if (mmc->delay_mask) { > period_ps = DIV_ROUND_UP((unsigned long)NSEC_PER_SEC * 1000, > clk_get_rate(hw->clk)); > - d = (val & mmc->delay_mask) >> __bf_shf(mmc->delay_mask); > + d = (val & mmc->delay_mask) >> __ffs(mmc->delay_mask); > degrees += d * mmc->delay_step_ps * 360 / period_ps; > degrees %= 360; > } > @@ -223,11 +223,11 @@ static void meson_mmc_apply_phase_delay(struct meson_mmc_phase *mmc, > > val = readl(mmc->reg); > val &= ~mmc->phase_mask; > - val |= phase << __bf_shf(mmc->phase_mask); > + val |= phase << __ffs(mmc->phase_mask); > > if (mmc->delay_mask) { > val &= ~mmc->delay_mask; > - val |= delay << __bf_shf(mmc->delay_mask); > + val |= delay << __ffs(mmc->delay_mask); > } > > writel(val, mmc->reg); > @@ -254,7 +254,7 @@ static int meson_mmc_clk_set_phase(struct clk_hw *hw, int degrees) > r = do_div(p, 360 / phase_num); > d = DIV_ROUND_CLOSEST(r * period_ps, > 360 * mmc->delay_step_ps); > - d = min(d, mmc->delay_mask >> __bf_shf(mmc->delay_mask)); > + d = min(d, mmc->delay_mask >> __ffs(mmc->delay_mask)); > } > > meson_mmc_apply_phase_delay(mmc, p, d); > @@ -518,7 +518,7 @@ static int meson_mmc_clk_init(struct meson_host *host) > init.num_parents = MUX_CLK_NUM_PARENTS; > > mux->reg = host->regs + SD_EMMC_CLOCK; > - mux->shift = __bf_shf(CLK_SRC_MASK); > + mux->shift = __ffs(CLK_SRC_MASK); > mux->mask = CLK_SRC_MASK >> mux->shift; > mux->hw.init = &init; > > @@ -540,7 +540,7 @@ static int meson_mmc_clk_init(struct meson_host *host) > init.num_parents = 1; > > div->reg = host->regs + SD_EMMC_CLOCK; > - div->shift = __bf_shf(CLK_DIV_MASK); > + div->shift = __ffs(CLK_DIV_MASK); > div->width = __builtin_popcountl(CLK_DIV_MASK); > div->hw.init = &init; > div->flags = (CLK_DIVIDER_ONE_BASED | > -- > 2.9.5 > ^ permalink raw reply [flat|nested] 2+ messages in thread
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2017-08-31 9:29 ` [PATCH] mmc: meson-gx: fix __ffsdi2 undefined on arm32 Jerome Brunet
2017-08-31 10:45 ` Ulf Hansson
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