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| author | Ben Wolsieffer <ben.wolsieffer@hefring.com> | 2023-09-27 13:57:49 -0400 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-10-04 13:22:37 -0700 |
| commit | 6f195d6b0da3b689922ba9e302af2f49592fa9fc (patch) | |
| tree | e223bf51c94d4570ab88ac815cbd7b438d406f8b /net/tipc | |
| parent | 0add5c597f3253a9c6108a0a81d57f44ab0d9d30 (diff) | |
net: stmmac: dwmac-stm32: fix resume on STM32 MCU
The STM32MP1 keeps clk_rx enabled during suspend, and therefore the
driver does not enable the clock in stm32_dwmac_init() if the device was
suspended. The problem is that this same code runs on STM32 MCUs, which
do disable clk_rx during suspend, causing the clock to never be
re-enabled on resume.
This patch adds a variant flag to indicate that clk_rx remains enabled
during suspend, and uses this to decide whether to enable the clock in
stm32_dwmac_init() if the device was suspended.
This approach fixes this specific bug with limited opportunity for
unintended side-effects, but I have a follow up patch that will refactor
the clock configuration and hopefully make it less error prone.
Fixes: 6528e02cc9ff ("net: ethernet: stmmac: add adaptation for stm32mp157c.")
Signed-off-by: Ben Wolsieffer <ben.wolsieffer@hefring.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/20230927175749.1419774-1-ben.wolsieffer@hefring.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/tipc')
0 files changed, 0 insertions, 0 deletions