diff options
| author | Louis Morhet <lmorhet@kalrayinc.com> | 2023-04-04 14:15:25 +0200 |
|---|---|---|
| committer | Benjamin Tissoires <benjamin.tissoires@redhat.com> | 2023-04-13 16:41:37 +0200 |
| commit | ca6961d8a851f3720175f500be38fe9cee5a2c13 (patch) | |
| tree | 6c432639a764eebd5fba2e1e3ac1f91997d5255e /drivers/hid | |
| parent | HID: mcp2221: fix report layout for gpio get (diff) | |
| download | linux-ca6961d8a851f3720175f500be38fe9cee5a2c13.tar.xz linux-ca6961d8a851f3720175f500be38fe9cee5a2c13.zip | |
HID: mcp2221: fix get and get_direction for gpio
The mcp2221_raw_event retrieves the value and direction of gpio on the
same command, by setting the value on mcp->status and the direction on
mcp->gpio_dir; and the offset at which they are read is based on
mcp->gp_idx, set by the gpiochip callbacks.
However, the individual gpiochip calls set the index to look for
directly on the field they want to track. This create a "double offset"
in the final read in the response report.
Align the behaviour of mcp2221_raw_event and
mcp_gpio_get/mcp_gpio_get_direction by putting gp_idx on those calls to
the base offset of the gpio status struct.
Signed-off-by: Louis Morhet <lmorhet@kalrayinc.com>
Link: https://lore.kernel.org/r/dd0b23800a79d2a464e1e9ed429b018b69fd5df2.1680602387.git.lmorhet@kalrayinc.com
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Diffstat (limited to 'drivers/hid')
| -rw-r--r-- | drivers/hid/hid-mcp2221.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/hid/hid-mcp2221.c b/drivers/hid/hid-mcp2221.c index fa20ed4d395a..72883e0ce757 100644 --- a/drivers/hid/hid-mcp2221.c +++ b/drivers/hid/hid-mcp2221.c @@ -594,7 +594,7 @@ static int mcp_gpio_get(struct gpio_chip *gc, mcp->txbuf[0] = MCP2221_GPIO_GET; - mcp->gp_idx = offsetof(struct mcp_get_gpio, gpio[offset].value); + mcp->gp_idx = offsetof(struct mcp_get_gpio, gpio[offset]); mutex_lock(&mcp->lock); ret = mcp_send_data_req_status(mcp, mcp->txbuf, 1); @@ -675,7 +675,7 @@ static int mcp_gpio_get_direction(struct gpio_chip *gc, mcp->txbuf[0] = MCP2221_GPIO_GET; - mcp->gp_idx = offsetof(struct mcp_get_gpio, gpio[offset].direction); + mcp->gp_idx = offsetof(struct mcp_get_gpio, gpio[offset]); mutex_lock(&mcp->lock); ret = mcp_send_data_req_status(mcp, mcp->txbuf, 1); |