[PATCH 0/1][SRU][OEM-5.13][H][I][U] ath10k: don't fail if IRAM write fails

[You-Sheng Yang]

BugLink: https://bugs.launchpad.net/bugs/1939937

[Impact]

Commit 9af7c32ceca8 ("ath10k: add target IRAM recovery feature support")
in v5.11 fails firmware loading without IRAM recovery feature. However,
the latest firmware from
https://github.com/kvalo/ath10k-firmware/tree/master/QCA9984/hw1.0/3.9.0.2
doesn't support IRAM, it follows new official ath10k firmwares may no
longer be loadable for kernel newer than v5.11.

[Fix]

A fix is proposed to
http://lists.infradead.org/pipermail/ath10k/2021-July/012729.html that
turns the lack/failure of IRAM recovery support a warning instead.

[Test Case]

With this fix, kernel gives errors about the IRAM supportness, but
proceeds to remaining procedures as before.

  ath10k_pci 0000:04:00.0: No hardware memory
  ath10k_pci 0000:04:00.0: failed to copy target iram contents: -12
  ath10k_pci 0000:07:00.0: No hardware memory
  ath10k_pci 0000:07:00.0: failed to copy target iram contents: -12

[Where problems could occur]

So the IRAM recovery feature may or may not be supported in the
officially released firmware, and people meet problems when using
non-IRAM supported firmware may still have a fallback to use older, but
IRAM recovery supported ones.

Slava Kardakov (1):
  UBUNTU: SAUCE: ath10k: don't fail if IRAM write fails

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

-- 
2.32.0