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X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, Takashi Iwai , Liam Girdwood , Sugar Zhang , linux-rockchip@lists.infradead.org, Jaroslav Kysela , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org This patch marks RXFIFO_DATA as precious to avoid being read outside a call from the driver, such as regmap debugfs Signed-off-by: Sugar Zhang --- sound/soc/rockchip/rockchip_pdm.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/sound/soc/rockchip/rockchip_pdm.c b/sound/soc/rockchip/rockchip_pdm.c index 955cdc2..e89beeb 100644 --- a/sound/soc/rockchip/rockchip_pdm.c +++ b/sound/soc/rockchip/rockchip_pdm.c @@ -415,6 +415,7 @@ static bool rockchip_pdm_rd_reg(struct device *dev, unsigned int reg) case PDM_INT_CLR: case PDM_INT_ST: case PDM_DATA_VALID: + case PDM_RXFIFO_DATA: case PDM_VERSION: return true; default: @@ -429,6 +430,17 @@ static bool rockchip_pdm_volatile_reg(struct device *dev, unsigned int reg) case PDM_FIFO_CTRL: case PDM_INT_CLR: case PDM_INT_ST: + case PDM_RXFIFO_DATA: + return true; + default: + return false; + } +} + +static bool rockchip_pdm_precious_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case PDM_RXFIFO_DATA: return true; default: return false; @@ -451,6 +463,7 @@ static const struct regmap_config rockchip_pdm_regmap_config = { .writeable_reg = rockchip_pdm_wr_reg, .readable_reg = rockchip_pdm_rd_reg, .volatile_reg = rockchip_pdm_volatile_reg, + .precious_reg = rockchip_pdm_precious_reg, .cache_type = REGCACHE_FLAT, }; -- 2.7.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel