[PATCH] reset: stm32: Fix bank and offset computation
Patrice Chotard
patrice.chotard at foss.st.com
Wed Apr 28 13:42:45 CEST 2021
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 at foss.st.com>
Signed-off-by: Pankaj Dev <pankaj.dev at st.com>
---
drivers/reset/stm32-reset.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/reset/stm32-reset.c b/drivers/reset/stm32-reset.c
index daa2e47ebb..bbc6b135a9 100644
--- 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);
--
2.17.1
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