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authorLinus Torvalds <torvalds@linux-foundation.org>2021-09-01 08:35:06 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-09-01 08:35:06 -0700
commitba1dc7f273c73b93e0e1dd9707b239ed69eebd70 (patch)
treef79ee28c2b88fde1a901619f9b4c72dffeaa2337 /samples
parent9e9fb7655ed585da8f468e29221f0ba194a5f613 (diff)
parent0dc3ad3f859d3a65b335c861ec342d31d91e8bc8 (diff)
Merge tag 'char-misc-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char / misc driver updates from Greg KH: "Here is the big set of char/misc driver changes for 5.15-rc1. Lots of different driver subsystems are being updated in here, notably: - mhi subsystem update - fpga subsystem update - coresight/hwtracing subsystem update - interconnect subsystem update - nvmem subsystem update - parport drivers update - phy subsystem update - soundwire subsystem update and there are some other char/misc drivers being updated as well: - binder driver additions - new misc drivers - lkdtm driver updates - mei driver updates - sram driver updates - other minor driver updates. Note, there are no habanalabs driver updates in this pull request, that will probably come later before -rc1 is out in a different request. All of these have been in linux-next for a while with no reported problems" * tag 'char-misc-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (169 commits) Revert "bus: mhi: Add inbound buffers allocation flag" misc/pvpanic: fix set driver data VMCI: fix NULL pointer dereference when unmapping queue pair char: mware: fix returnvar.cocci warnings parport: remove non-zero check on count soundwire: cadence: do not extend reset delay soundwire: intel: conditionally exit clock stop mode on system suspend soundwire: intel: skip suspend/resume/wake when link was not started soundwire: intel: fix potential race condition during power down phy: qcom-qmp: Add support for SM6115 UFS phy dt-bindings: phy: qcom,qmp: Add SM6115 UFS PHY bindings phy: qmp: Provide unique clock names for DP clocks lkdtm: remove IDE_CORE_CP crashpoint lkdtm: replace SCSI_DISPATCH_CMD with SCSI_QUEUE_RQ coresight: Replace deprecated CPU-hotplug functions. Documentation: coresight: Add documentation for CoreSight config coresight: syscfg: Add initial configfs support coresight: config: Add preloaded configurations coresight: etm4x: Add complex configuration handlers to etmv4 coresight: etm-perf: Update to activate selected configuration ...
Diffstat (limited to 'samples')
-rw-r--r--samples/mei/mei-amt-version.c51
1 files changed, 30 insertions, 21 deletions
diff --git a/samples/mei/mei-amt-version.c b/samples/mei/mei-amt-version.c
index ad3e56042f96..867debd3b912 100644
--- a/samples/mei/mei-amt-version.c
+++ b/samples/mei/mei-amt-version.c
@@ -154,31 +154,52 @@ err:
static ssize_t mei_recv_msg(struct mei *me, unsigned char *buffer,
ssize_t len, unsigned long timeout)
{
+ struct timeval tv;
+ fd_set set;
ssize_t rc;
+ tv.tv_sec = timeout / 1000;
+ tv.tv_usec = (timeout % 1000) * 1000000;
+
mei_msg(me, "call read length = %zd\n", len);
+ FD_ZERO(&set);
+ FD_SET(me->fd, &set);
+ rc = select(me->fd + 1, &set, NULL, NULL, &tv);
+ if (rc > 0 && FD_ISSET(me->fd, &set)) {
+ mei_msg(me, "have reply\n");
+ } else if (rc == 0) {
+ rc = -1;
+ mei_err(me, "read failed on timeout\n");
+ goto out;
+ } else { /* rc < 0 */
+ rc = errno;
+ mei_err(me, "read failed on select with status %zd %s\n",
+ rc, strerror(errno));
+ goto out;
+ }
+
rc = read(me->fd, buffer, len);
if (rc < 0) {
mei_err(me, "read failed with status %zd %s\n",
rc, strerror(errno));
- mei_deinit(me);
- } else {
- mei_msg(me, "read succeeded with result %zd\n", rc);
+ goto out;
}
+
+ mei_msg(me, "read succeeded with result %zd\n", rc);
+
+out:
+ if (rc < 0)
+ mei_deinit(me);
+
return rc;
}
static ssize_t mei_send_msg(struct mei *me, const unsigned char *buffer,
ssize_t len, unsigned long timeout)
{
- struct timeval tv;
ssize_t written;
ssize_t rc;
- fd_set set;
-
- tv.tv_sec = timeout / 1000;
- tv.tv_usec = (timeout % 1000) * 1000000;
mei_msg(me, "call write length = %zd\n", len);
@@ -189,19 +210,7 @@ static ssize_t mei_send_msg(struct mei *me, const unsigned char *buffer,
written, strerror(errno));
goto out;
}
-
- FD_ZERO(&set);
- FD_SET(me->fd, &set);
- rc = select(me->fd + 1 , &set, NULL, NULL, &tv);
- if (rc > 0 && FD_ISSET(me->fd, &set)) {
- mei_msg(me, "write success\n");
- } else if (rc == 0) {
- mei_err(me, "write failed on timeout with status\n");
- goto out;
- } else { /* rc < 0 */
- mei_err(me, "write failed on select with status %zd\n", rc);
- goto out;
- }
+ mei_msg(me, "write success\n");
rc = written;
out: