This is a note to let you know that I've just added the patch titled
net: ti: icss-iep: Reject perout generation request
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-ti-icss-iep-reject-perout-generation-request.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 6ace75c851b68e50bd7b15a4dd78635dd8e45060
Author: Meghana Malladi <m-malladi@xxxxxx>
Date: Thu Feb 27 14:54:41 2025 +0530
net: ti: icss-iep: Reject perout generation request
[ Upstream commit 54e1b4becf5e220be03db4e1be773c1310e8cbbd ]
IEP driver supports both perout and pps signal generation
but perout feature is faulty with half-cooked support
due to some missing configuration. Remove perout
support from the driver and reject perout requests with
"not supported" error code.
Fixes: c1e0230eeaab2 ("net: ti: icss-iep: Add IEP driver")
Signed-off-by: Meghana Malladi <m-malladi@xxxxxx>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@xxxxxxxxx>
Link: https://patch.msgid.link/20250227092441.1848419-1-m-malladi@xxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/ti/icssg/icss_iep.c b/drivers/net/ethernet/ti/icssg/icss_iep.c
index b491d89de8fb2..3f9a030471fe2 100644
--- a/drivers/net/ethernet/ti/icssg/icss_iep.c
+++ b/drivers/net/ethernet/ti/icssg/icss_iep.c
@@ -544,26 +544,7 @@ static int icss_iep_perout_enable_hw(struct icss_iep *iep,
static int icss_iep_perout_enable(struct icss_iep *iep,
struct ptp_perout_request *req, int on)
{
- int ret = 0;
-
- mutex_lock(&iep->ptp_clk_mutex);
-
- if (iep->pps_enabled) {
- ret = -EBUSY;
- goto exit;
- }
-
- if (iep->perout_enabled == !!on)
- goto exit;
-
- ret = icss_iep_perout_enable_hw(iep, req, on);
- if (!ret)
- iep->perout_enabled = !!on;
-
-exit:
- mutex_unlock(&iep->ptp_clk_mutex);
-
- return ret;
+ return -EOPNOTSUPP;
}
static int icss_iep_pps_enable(struct icss_iep *iep, int on)
