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Date: Mon, 20 Oct 2008 20:01:14 +0100 From: Mark Brown <broonie@...nsource.wolfsonmicro.com> To: Samuel Ortiz <sameo@...nedhand.com> Cc: linux-kernel@...r.kernel.org, Mark Brown <broonie@...nsource.wolfsonmicro.com> Subject: [PATCH 2/2] mfd: Don't store volatile bits in WM8350 register cache This makes the contents of the cache clearer and fixes incorrect initialisation of the cache for partially volatile registers. Signed-off-by: Mark Brown <broonie@...nsource.wolfsonmicro.com> --- drivers/mfd/wm8350-core.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/drivers/mfd/wm8350-core.c b/drivers/mfd/wm8350-core.c index fbe22fb..0d47fb9 100644 --- a/drivers/mfd/wm8350-core.c +++ b/drivers/mfd/wm8350-core.c @@ -183,6 +183,9 @@ static int wm8350_write(struct wm8350 *wm8350, u8 reg, int num_regs, u16 *src) (wm8350->reg_cache[i] & ~wm8350_reg_io_map[i].writable) | src[i - reg]; + /* Don't store volatile bits */ + wm8350->reg_cache[i] &= ~wm8350_reg_io_map[i].vol; + src[i - reg] = cpu_to_be16(src[i - reg]); } @@ -1120,6 +1123,7 @@ static int wm8350_create_cache(struct wm8350 *wm8350, int mode) } value = be16_to_cpu(value); value &= wm8350_reg_io_map[i].readable; + value &= ~wm8350_reg_io_map[i].vol; wm8350->reg_cache[i] = value; } else wm8350->reg_cache[i] = reg_map[i]; -- 1.5.6.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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