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gpio: ws16c48: Fix off-by-one error in WS16C48 resource region extent

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commit 33f83d13de upstream.

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: 2c05a0f29f ("gpio: ws16c48: Implement and utilize register structures")
Cc: stable@vger.kernel.org
Cc: Paul Demetrotion <pdemetrotion@winsystems.com>
Signed-off-by: William Breathitt Gray <william.gray@linaro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
William Breathitt Gray
2023-08-10 18:00:44 -04:00
committed by Greg Kroah-Hartman
parent 5e17b8ee64
commit 227bd2c1ea
1 changed files with 1 additions and 1 deletions
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2
drivers/gpio/gpio-ws16c48.c
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@@ -18,7 +18,7 @@
#include <linux/spinlock.h> #include <linux/spinlock.h>
#include <linux/types.h> #include <linux/types.h>
#define WS16C48_EXTENT 10 #define WS16C48_EXTENT 11
#define MAX_NUM_WS16C48 max_num_isa_dev(WS16C48_EXTENT) #define MAX_NUM_WS16C48 max_num_isa_dev(WS16C48_EXTENT)
static unsigned int base[MAX_NUM_WS16C48]; static unsigned int base[MAX_NUM_WS16C48];