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misc: fastrpc: Mark all sessions as invalid in cb_remove 

commit a4e61de63e upstream.

In remoteproc shutdown sequence, rpmsg_remove will get called which
would depopulate all the child nodes that have been created during
rpmsg_probe. This would result in cb_remove call for all the context
banks for the remoteproc. In cb_remove function, session 0 is
getting skipped which is not correct as session 0 will never become
available again. Add changes to mark session 0 also as invalid.

Fixes: f6f9279f2b ("misc: fastrpc: Add Qualcomm fastrpc basic driver model")
Cc: stable <stable@kernel.org>
Signed-off-by: Ekansh Gupta <quic_ekangupt@quicinc.com>
Link: https://lore.kernel.org/r/20240108114833.20480-1-quic_ekangupt@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ekansh Gupta 2024-01-08 17:18:33 +05:30 committed by Greg Kroah-Hartman
parent 90e09c016d
commit 4ab56381ac
1 changed files with 1 additions and 1 deletions
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2
drivers/misc/fastrpc.c
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@ -1990,7 +1990,7 @@ static int fastrpc_cb_remove(struct platform_device *pdev)
int i;
spin_lock_irqsave(&cctx->lock, flags);
for (i = 1; i < FASTRPC_MAX_SESSIONS; i++) {
for (i = 0; i < FASTRPC_MAX_SESSIONS; i++) {
if (cctx->session[i].sid == sess->sid) {
cctx->session[i].valid = false;
cctx->sesscount--;