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    Subject[PATCH 19/19] gpu: drm: bridge: analogix: analogix_dp_reg: Remove unused function 'analogix_dp_start_aux_transaction'
    Date
    Fixes the following W=1 kernel build warning(s):

    drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c:527:12: warning: ‘analogix_dp_start_aux_transaction’ defined but not used [-Wunused-function]

    Cc: Andrzej Hajda <a.hajda@samsung.com>
    Cc: Neil Armstrong <narmstrong@baylibre.com>
    Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
    Cc: Jonas Karlman <jonas@kwiboo.se>
    Cc: Jernej Skrabec <jernej.skrabec@siol.net>
    Cc: David Airlie <airlied@linux.ie>
    Cc: Daniel Vetter <daniel@ffwll.ch>
    Cc: Jason Yan <yanaijie@huawei.com>
    Cc: Lee Jones <lee.jones@linaro.org>
    Cc: Jingoo Han <jg1.han@samsung.com>
    Cc: dri-devel@lists.freedesktop.org
    Signed-off-by: Lee Jones <lee.jones@linaro.org>
    ---
    .../gpu/drm/bridge/analogix/analogix_dp_reg.c | 44 -------------------
    1 file changed, 44 deletions(-)

    diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
    index 9ce45c757f8c8..cab6c8b92efd4 100644
    --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
    +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
    @@ -524,50 +524,6 @@ void analogix_dp_enable_sw_function(struct analogix_dp_device *dp)
    writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_1);
    }

    -static int analogix_dp_start_aux_transaction(struct analogix_dp_device *dp)
    -{
    - int reg;
    - int retval = 0;
    - int timeout_loop = 0;
    -
    - /* Enable AUX CH operation */
    - reg = readl(dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_2);
    - reg |= AUX_EN;
    - writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_2);
    -
    - /* Is AUX CH command reply received? */
    - reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA);
    - while (!(reg & RPLY_RECEIV)) {
    - timeout_loop++;
    - if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) {
    - dev_err(dp->dev, "AUX CH command reply failed!\n");
    - return -ETIMEDOUT;
    - }
    - reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA);
    - usleep_range(10, 11);
    - }
    -
    - /* Clear interrupt source for AUX CH command reply */
    - writel(RPLY_RECEIV, dp->reg_base + ANALOGIX_DP_INT_STA);
    -
    - /* Clear interrupt source for AUX CH access error */
    - reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA);
    - if (reg & AUX_ERR) {
    - writel(AUX_ERR, dp->reg_base + ANALOGIX_DP_INT_STA);
    - return -EREMOTEIO;
    - }
    -
    - /* Check AUX CH error access status */
    - reg = readl(dp->reg_base + ANALOGIX_DP_AUX_CH_STA);
    - if ((reg & AUX_STATUS_MASK) != 0) {
    - dev_err(dp->dev, "AUX CH error happens: %d\n\n",
    - reg & AUX_STATUS_MASK);
    - return -EREMOTEIO;
    - }
    -
    - return retval;
    -}
    -
    void analogix_dp_set_link_bandwidth(struct analogix_dp_device *dp, u32 bwtype)
    {
    u32 reg;
    --
    2.25.1
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