diff options
| author | cinap_lenrek <cinap_lenrek@felloff.net> | 2022-02-05 01:25:28 +0000 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@felloff.net> | 2022-02-05 01:25:28 +0000 |
| commit | dc725301592117ad0e70a0ab21926dcf5302ed31 (patch) | |
| tree | ded5df41ec27ce67577009e9c0a9fa8016a26a8e /sys/src/9/bcm | |
| parent | 1290c534bef72b282b4c562b95a4b2be8237e3b0 (diff) | |
devgpio: make reading ctl file return 0 bytes
Diffstat (limited to 'sys/src/9/bcm')
| -rw-r--r-- | sys/src/9/bcm/devgpio.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/src/9/bcm/devgpio.c b/sys/src/9/bcm/devgpio.c index 4c664d9fe..251297256 100644 --- a/sys/src/9/bcm/devgpio.c +++ b/sys/src/9/bcm/devgpio.c @@ -448,6 +448,7 @@ gpioread(Chan *c, void *va, long n, vlong off) n = 1; break; case Qctl: + n = 0; break; case Qevent: if(off >= 4) @@ -555,10 +556,10 @@ gpiowrite(Chan *c, void *va, long n, vlong) break; case CMfunc: pin = getpin(cb->f[2]); - arg = cb->f[1]; if(pin == -1) { error(Ebadctl); } + arg = cb->f[1]; for(i = 0; i < nelem(funcname); i++) { if(strncmp(funcname[i], arg, strlen(funcname[i])) == 0) @@ -588,7 +589,6 @@ gpiowrite(Chan *c, void *va, long n, vlong) if(pin == -1) { error(Ebadctl); } - arg = cb->f[1]; for(i = 0; i < nelem(evtypename); i++) { |