drivers: soc: sunxi: Fix mask generation for SRAM mapping

GENMASK is inclusive on both ends, therefor one has to be
subtracted from the width.
Also fixes the mask for debug output.

Signed-off-by: Jens Kuske <jenskuske@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/soc/sunxi/sunxi_sram.c b/drivers/soc/sunxi/sunxi_sram.c
index bc52670c8f4b..99e354c8f53f 100644
--- a/drivers/soc/sunxi/sunxi_sram.c
+++ b/drivers/soc/sunxi/sunxi_sram.c
@@ -117,7 +117,7 @@ static int sunxi_sram_show(struct seq_file *s, void *data)
 
                         val = readl(base + sram_data->reg);
                         val >>= sram_data->offset;
-                        val &= sram_data->width;
+                        val &= GENMASK(sram_data->width - 1, 0);
 
                         for (func = sram_data->func; func->func; func++) {
                                 seq_printf(s, "\t\t%s%c\n", func->func,
@@ -208,7 +208,8 @@ int sunxi_sram_claim(struct device *dev)
                 return -EBUSY;
         }
 
-        mask = GENMASK(sram_data->offset + sram_data->width, sram_data->offset);
+        mask = GENMASK(sram_data->offset + sram_data->width - 1,
+                       sram_data->offset);
         val = readl(base + sram_data->reg);
         val &= ~mask;
         writel(val | ((device << sram_data->offset) & mask),