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authorSarangdhar Joshi <spjoshi@codeaurora.org>2017-05-27 02:51:01 +0300
committerBjorn Andersson <bjorn.andersson@linaro.org>2017-05-27 04:11:33 +0300
commit7e83cab824a86704cdbd7735c19d34e0ce423dc5 (patch)
tree7274a1af97a011d06371e1ad463a8066f43ae8d7 /drivers/remoteproc
parent1efa30d0895e7e9a58a59b0880b330b38245be68 (diff)
downloadlinux-7e83cab824a86704cdbd7735c19d34e0ce423dc5.tar.xz
remoteproc: Modify recovery path to use rproc_{start,stop}()
Replace rproc_shutdown() by rproc_stop() and rproc_boot() by rproc_start() in the recovery path, in order to avoid remoteproc resources re-allocation overhead and to assist with extracting the coredumps after stopping the remote processor. Signed-off-by: Sarangdhar Joshi <spjoshi@codeaurora.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'drivers/remoteproc')
-rw-r--r--drivers/remoteproc/remoteproc_core.c35
1 files changed, 26 insertions, 9 deletions
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index c8cb54bedd9a..369ba0f8429c 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -1051,23 +1051,40 @@ static int rproc_stop(struct rproc *rproc)
*/
int rproc_trigger_recovery(struct rproc *rproc)
{
- dev_err(&rproc->dev, "recovering %s\n", rproc->name);
+ const struct firmware *firmware_p;
+ struct device *dev = &rproc->dev;
+ int ret;
+
+ dev_err(dev, "recovering %s\n", rproc->name);
init_completion(&rproc->crash_comp);
- /* shut down the remote */
- /* TODO: make sure this works with rproc->power > 1 */
- rproc_shutdown(rproc);
+ ret = mutex_lock_interruptible(&rproc->lock);
+ if (ret)
+ return ret;
+
+ ret = rproc_stop(rproc);
+ if (ret)
+ goto unlock_mutex;
/* wait until there is no more rproc users */
wait_for_completion(&rproc->crash_comp);
- /*
- * boot the remote processor up again
- */
- rproc_boot(rproc);
+ /* load firmware */
+ ret = request_firmware(&firmware_p, rproc->firmware, dev);
+ if (ret < 0) {
+ dev_err(dev, "request_firmware failed: %d\n", ret);
+ goto unlock_mutex;
+ }
- return 0;
+ /* boot the remote processor up again */
+ ret = rproc_start(rproc, firmware_p);
+
+ release_firmware(firmware_p);
+
+unlock_mutex:
+ mutex_unlock(&rproc->lock);
+ return ret;
}
/**