Commit e3274e915061a65717454106301d4a5ea8f71783
Committed by
Linus Torvalds
Linus Torvalds
1 parent
c8fc40cd34
gpio: modify sysfs gpio export so that "value" displays as 0 or 1
gpiolib can export GPIOs to userspace via sysfs. This patch modifies the gpio_value_show() so that any non-zero value is explicitly printed as "1", rather than whatever numerical value the lower-level driver returns. Signed-off-by: Steve Falco <sfalco@harris.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Showing 1 changed file with 1 additions and 1 deletions Side-by-side Diff
drivers/gpio/gpiolib.c
| ... | ... | @@ -248,7 +248,7 @@ |
| 248 | 248 | if (!test_bit(FLAG_EXPORT, &desc->flags)) |
| 249 | 249 | status = -EIO; |
| 250 | 250 | else |
| 251 | - status = sprintf(buf, "%d\n", gpio_get_value_cansleep(gpio)); | |
| 251 | + status = sprintf(buf, "%d\n", !!gpio_get_value_cansleep(gpio)); | |
| 252 | 252 | |
| 253 | 253 | mutex_unlock(&sysfs_lock); |
| 254 | 254 | return status; |