On Thu, Jul 22, 2021 at 12:42 PM ojab // [off-list ref] wrote:

See also: https://lists.infradead.org/pipermail/ath10k/2021-May/012626.html

On Thu, 22 Jul 2021 at 22:36, ojab [off-list ref] wrote:

quoted

After reboot with kernel & firmware updates I found `failed to copy
target iram contents:` in dmesg and missing wlan interfaces for both
of my QCA9984 compex cards. Rolling back kernel/firmware didn't fixed
it, so while I have no idea what's actually happening, I don't see why
we should fail in this case, looks like some optional firmware ability
that could be skipped.

Also with additional logging there is

[    6.839858] ath10k_pci 0000:04:00.0: No hardware memory
[    6.841205] ath10k_pci 0000:04:00.0: failed to copy target iram contents: -12
[    6.873578] ath10k_pci 0000:07:00.0: No hardware memory
[    6.875052] ath10k_pci 0000:07:00.0: failed to copy target iram contents: -12

so exact branch could be seen.

Signed-off-by: Slava Kardakov <redacted>
---
 Of course I forgot to sing off, since I don't use it by default because I
 hate my real name and kernel requires it

Thanks for working on this! And sorry for the slow response. I've been
unexpectedly very busy lately, but I plan to test out this patch next
week.

quoted

 drivers/net/wireless/ath/ath10k/core.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c
index 2f9be182fbfb..d9fd5294e142 100644
--- a/drivers/net/wireless/ath/ath10k/core.c
+++ b/drivers/net/wireless/ath/ath10k/core.c

@@ -2691,8 +2691,10 @@ static int ath10k_core_copy_target_iram(struct ath10k *ar)
        u32 len, remaining_len;

        hw_mem = ath10k_coredump_get_mem_layout(ar);
-       if (!hw_mem)
+       if (!hw_mem) {
+               ath10k_warn(ar, "No hardware memory");
                return -ENOMEM;
+       }

        for (i = 0; i < hw_mem->region_table.size; i++) {
                tmp = &hw_mem->region_table.regions[i];

@@ -2702,8 +2704,10 @@ static int ath10k_core_copy_target_iram(struct ath10k *ar)
                }
        }

-       if (!mem_region)
+       if (!mem_region) {
+               ath10k_warn(ar, "No memory region");
                return -ENOMEM;
+       }

        for (i = 0; i < ar->wmi.num_mem_chunks; i++) {
                if (ar->wmi.mem_chunks[i].req_id ==

@@ -2917,7 +2921,6 @@ int ath10k_core_start(struct ath10k *ar, enum ath10k_firmware_mode mode,
                if (status) {
                        ath10k_warn(ar, "failed to copy target iram contents: %d",
                                    status);
-                       goto err_hif_stop;
                }
        }

--

2.32.0