| Message ID | 1302591795-12024-1-git-send-email-vapier@gentoo.org |
|---|---|
| State | Accepted |
| Commit | 6801201ee72795dddb1e23aa6091c95866b19e0b |
| Delegated to: | Wolfgang Denk |
| Headers | show |
Am Dienstag, den 12.04.2011, 03:03 -0400 schrieb Mike Frysinger: > Make sure the pin request passed before attempting to use it later on. > > Signed-off-by: Mike Frysinger <vapier@gentoo.org> Tested-by: Andreas Pretzsch <apr@cn-eng.de> Verified on Blackfin BF561 with full port range.
diff --git a/common/cmd_gpio.c b/common/cmd_gpio.c index 9c9de28..9cc790a 100644 --- a/common/cmd_gpio.c +++ b/common/cmd_gpio.c @@ -57,7 +57,10 @@ static int do_gpio(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) goto show_usage; /* grab the pin before we tweak it */ - gpio_request(gpio, "cmd_gpio"); + if (gpio_request(gpio, "cmd_gpio")) { + printf("gpio: requesting pin %u failed\n", gpio); + return -1; + } /* finally, let's do it: set direction and exec command */ if (sub_cmd == GPIO_INPUT) {
Make sure the pin request passed before attempting to use it later on. Signed-off-by: Mike Frysinger <vapier@gentoo.org> --- common/cmd_gpio.c | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-)