reset: stm32: Fix bank and offset computation

BITS_PER_LONG is used to represent register's size which is 32.
But when compiled on arch64, BITS_PER_LONG is then equal to 64.

Fix bank and offset computation to make it work on arch32 and
arch64 and ensure that register's size is always equal to 32.

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Signed-off-by: Pankaj Dev <pankaj.dev@st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>

diff --git a/drivers/reset/stm32-reset.c b/drivers/reset/stm32-reset.c
index daa2e47..bbc6b13 100644 (file)
--- a/drivers/reset/stm32-reset.c
+++ b/drivers/reset/stm32-reset.c
@@ -40,8 +40,8 @@ static int stm32_reset_free(struct reset_ctl *reset_ctl)
 static int stm32_reset_assert(struct reset_ctl *reset_ctl)
 {
        struct stm32_reset_priv *priv = dev_get_priv(reset_ctl->dev);
-       int bank = (reset_ctl->id / BITS_PER_LONG) * 4;
-       int offset = reset_ctl->id % BITS_PER_LONG;
+       int bank = (reset_ctl->id / (sizeof(u32) * BITS_PER_BYTE)) * 4;
+       int offset = reset_ctl->id % (sizeof(u32) * BITS_PER_BYTE);
 
        dev_dbg(reset_ctl->dev, "reset id = %ld bank = %d offset = %d)\n",
                reset_ctl->id, bank, offset);
@@ -61,8 +61,8 @@ static int stm32_reset_assert(struct reset_ctl *reset_ctl)
 static int stm32_reset_deassert(struct reset_ctl *reset_ctl)
 {
        struct stm32_reset_priv *priv = dev_get_priv(reset_ctl->dev);
-       int bank = (reset_ctl->id / BITS_PER_LONG) * 4;
-       int offset = reset_ctl->id % BITS_PER_LONG;
+       int bank = (reset_ctl->id / (sizeof(u32) * BITS_PER_BYTE)) * 4;
+       int offset = reset_ctl->id % (sizeof(u32) * BITS_PER_BYTE);
 
        dev_dbg(reset_ctl->dev, "reset id = %ld bank = %d offset = %d)\n",
                reset_ctl->id, bank, offset);