diff options
| author | Benjamin Berg <benjamin.berg@intel.com> | 2023-10-18 14:36:41 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2024-07-03 12:18:01 +0200 |
| commit | c6c4cbaa01b61eff2232d8cf4d441565535aa53a (patch) | |
| tree | 5d5abf9d1d9c002e3bad97c90d50e59d55d9842f /arch/um | |
| parent | c140a5bd5da48de353be8bf9356f71a66f622a68 (diff) | |
um: chan_user: catch EINTR when reading and writing
If the read/write function returns an error then we expect to see an
event/IRQ later on. However, this will only happen after an EAGAIN as we
are using edge based event triggering.
As such, EINTR needs to be caught should it happen.
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Link: https://patch.msgid.link/20231018123643.1255813-2-benjamin@sipsolutions.net
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'arch/um')
| -rw-r--r-- | arch/um/drivers/chan_user.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/um/drivers/chan_user.c b/arch/um/drivers/chan_user.c index ec04e47b9d79..60fcb181835d 100644 --- a/arch/um/drivers/chan_user.c +++ b/arch/um/drivers/chan_user.c @@ -23,7 +23,7 @@ int generic_read(int fd, __u8 *c_out, void *unused) { int n; - n = read(fd, c_out, sizeof(*c_out)); + CATCH_EINTR(n = read(fd, c_out, sizeof(*c_out))); if (n > 0) return n; else if (n == 0) @@ -39,7 +39,7 @@ int generic_write(int fd, const __u8 *buf, size_t n, void *unused) { int err; - err = write(fd, buf, n); + CATCH_EINTR(err = write(fd, buf, n)); if (err > 0) return err; else if (errno == EAGAIN) |