On 6/29/20 7:35 PM, Jakub Kicinski wrote:

On Mon, 29 Jun 2020 16:49:15 -0500 Alex Elder wrote:

quoted

The INIT_HOL_BLOCK_EN and INIT_HOL_BLOCK_TIMER endpoint registers
are only valid for RX endpoints.

Have ipa_endpoint_modem_hol_block_clear_all() skip writing these
registers for TX endpoints.

Signed-off-by: Alex Elder <redacted>
---
 drivers/net/ipa/ipa_endpoint.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ipa/ipa_endpoint.c b/drivers/net/ipa/ipa_endpoint.c
index 9f50d0d11704..3f5a41fc1997 100644
--- a/drivers/net/ipa/ipa_endpoint.c
+++ b/drivers/net/ipa/ipa_endpoint.c

@@ -642,6 +642,8 @@ static int ipa_endpoint_init_hol_block_timer(struct ipa_endpoint *endpoint,
 	u32 offset;
 	u32 val;
 
+	/* assert(!endpoint->toward_ipa); */
+
 	/* XXX We'll fix this when the register definition is clear */
 	if (microseconds) {
 		struct device *dev = &ipa->pdev->dev;

@@ -671,6 +673,8 @@ ipa_endpoint_init_hol_block_enable(struct ipa_endpoint *endpoint, bool enable)
 	u32 offset;
 	u32 val;
 
+	/* assert(!endpoint->toward_ipa); */

What are these assert comments for? :S

They are place holders for when I can put in a proper assert
function.  For now I'm trying to avoid BUG_ON() calls, but
at some point soon I'll replace these comments with calls
to a macro that does BUG_ON() conditioned on a config option
(or something else if there's a better suggestion).

Even though it's commented, the assert() call does what
I want, which is to communicate to the reader a condition
assumed by the code, succinctly.

					-Alex