drm/mcde: Do not needlessly logically and with 3

The i index i always 0..3 in these statements so there
is no need to tag "& 3" to clamp it to 3 here. Make
the operator precedence explicit even if it's correct
as it is, the paranthesis creates less cognitive stress
for humans.

Reviewed-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191122072508.25677-1-linus.walleij@linaro.org

diff --git a/drivers/gpu/drm/mcde/mcde_dsi.c b/drivers/gpu/drm/mcde/mcde_dsi.c
index 58b1e62..42fff81 100644 (file)
--- a/drivers/gpu/drm/mcde/mcde_dsi.c
+++ b/drivers/gpu/drm/mcde/mcde_dsi.c
@@ -246,25 +246,25 @@ static ssize_t mcde_dsi_host_transfer(struct mipi_dsi_host *host,
        if (txlen > 0) {
                val = 0;
                for (i = 0; i < 4 && i < txlen; i++)
-                       val |= tx[i] << (i & 3) * 8;
+                       val |= tx[i] << (i * 8);
        }
        writel(val, d->regs + DSI_DIRECT_CMD_WRDAT0);
        if (txlen > 4) {
                val = 0;
                for (i = 0; i < 4 && (i + 4) < txlen; i++)
-                       val |= tx[i + 4] << (i & 3) * 8;
+                       val |= tx[i + 4] << (i * 8);
                writel(val, d->regs + DSI_DIRECT_CMD_WRDAT1);
        }
        if (txlen > 8) {
                val = 0;
                for (i = 0; i < 4 && (i + 8) < txlen; i++)
-                       val |= tx[i + 8] << (i & 3) * 8;
+                       val |= tx[i + 8] << (i * 8);
                writel(val, d->regs + DSI_DIRECT_CMD_WRDAT2);
        }
        if (txlen > 12) {
                val = 0;
                for (i = 0; i < 4 && (i + 12) < txlen; i++)
-                       val |= tx[i + 12] << (i & 3) * 8;
+                       val |= tx[i + 12] << (i * 8);
                writel(val, d->regs + DSI_DIRECT_CMD_WRDAT3);
        }