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greybus: uart: send_data should return size or error

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gb_operation_sync returns 0 on success but the calling function
expects the number of bytes written on success or a negative errno

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Bryan O'Donoghue 2015-06-02 13:40:48 +01:00 committed by Greg Kroah-Hartman
parent f95ad78c72
commit 563bd79b2d
1 changed files with 7 additions and 5 deletions
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12
drivers/staging/greybus/uart.c
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@ -71,7 +71,7 @@ define_get_version(gb_tty, UART);
static int send_data(struct gb_tty *tty, u16 size, const u8 *data)
{
struct gb_uart_send_data_request *request;
int retval;
int ret;
if (!data || !size)
return 0;
@ -82,11 +82,13 @@ static int send_data(struct gb_tty *tty, u16 size, const u8 *data)
request->size = cpu_to_le16(size);
memcpy(&request->data[0], data, size);
retval = gb_operation_sync(tty->connection, GB_UART_TYPE_SEND_DATA,
request, sizeof(*request) + size, NULL, 0);
ret = gb_operation_sync(tty->connection, GB_UART_TYPE_SEND_DATA,
request, sizeof(*request) + size, NULL, 0);
kfree(request);
return retval;
if (ret)
return ret;
else
return size;
}
static int send_line_coding(struct gb_tty *tty)