* [PATCH] gpio: ws16c48: Fix off-by-one error in WS16C48 resource region extent
@ 2023-02-28 8:11 William Breathitt Gray
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From: William Breathitt Gray @ 2023-02-28 8:11 UTC (permalink / raw)
To: linus.walleij, brgl
Cc: linux-gpio, linux-kernel, techsupport, stable,
William Breathitt Gray, Paul Demetrotion
The WinSystems WS16C48 I/O address region spans offsets 0x0 through 0xA,
which is a total of 11 bytes. Fix the WS16C48_EXTENT define to the
correct value of 11 so that access to necessary device registers is
properly requested in the ws16c48_probe() callback by the
devm_request_region() function call.
Fixes: 2c05a0f29f41 ("gpio: ws16c48: Implement and utilize register structures")
Cc: Paul Demetrotion <pdemetrotion@winsystems.com>
Signed-off-by: William Breathitt Gray <william.gray@linaro.org>
---
drivers/gpio/gpio-ws16c48.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpio/gpio-ws16c48.c b/drivers/gpio/gpio-ws16c48.c
index e73885a4dc32..afb42a8e916f 100644
--- a/drivers/gpio/gpio-ws16c48.c
+++ b/drivers/gpio/gpio-ws16c48.c
@@ -18,7 +18,7 @@
#include <linux/spinlock.h>
#include <linux/types.h>
-#define WS16C48_EXTENT 10
+#define WS16C48_EXTENT 11
#define MAX_NUM_WS16C48 max_num_isa_dev(WS16C48_EXTENT)
static unsigned int base[MAX_NUM_WS16C48];
base-commit: 4827aae061337251bb91801b316157a78b845ec7
--
2.39.2
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2023-02-28 8:11 [PATCH] gpio: ws16c48: Fix off-by-one error in WS16C48 resource region extent William Breathitt Gray
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