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Jianheng Zhang ed7e211b67 net: stmmac: fix FPE events losing
[ Upstream commit 37e4b8df27bc68340f3fc80dbb27e3549c7f881c ]

The status bits of register MAC_FPE_CTRL_STS are clear on read. Using
32-bit read for MAC_FPE_CTRL_STS in dwmac5_fpe_configure() and
dwmac5_fpe_send_mpacket() clear the status bits. Then the stmmac interrupt
handler missing FPE event status and leads to FPE handshaking failure and
retries.
To avoid clear status bits of MAC_FPE_CTRL_STS in dwmac5_fpe_configure()
and dwmac5_fpe_send_mpacket(), add fpe_csr to stmmac_fpe_cfg structure to
cache the control bits of MAC_FPE_CTRL_STS and to avoid reading
MAC_FPE_CTRL_STS in those methods.

Fixes: 5a5586112b ("net: stmmac: support FPE link partner hand-shaking procedure")
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Signed-off-by: Jianheng Zhang <Jianheng.Zhang@synopsys.com>
Link: https://lore.kernel.org/r/CY5PR12MB637225A7CF529D5BE0FBE59CBF81A@CY5PR12MB6372.namprd12.prod.outlook.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-12-13 18:39:08 +01:00
arch x86/tdx: Allow 32-bit emulation by default 2023-12-13 18:39:05 +01:00
block
certs
crypto
Documentation
drivers net: stmmac: fix FPE events losing 2023-12-13 18:39:08 +01:00
fs iomap: update ki_pos a little later in iomap_dio_complete 2023-12-08 08:51:20 +01:00
include net: stmmac: fix FPE events losing 2023-12-13 18:39:08 +01:00
init
io_uring io_uring: fix off-by one bvec index 2023-12-03 07:32:13 +01:00
ipc
kernel hrtimers: Push pending hrtimers away from outgoing CPU earlier 2023-12-13 18:39:03 +01:00
lib zstd: Fix array-index-out-of-bounds UBSAN warning 2023-12-13 18:39:04 +01:00
LICENSES
mm mm,kfence: decouple kfence from page granularity mapping judgement 2023-12-03 07:32:08 +01:00
net ipv6: fix potential NULL deref in fib6_add() 2023-12-13 18:39:06 +01:00
rust
samples
scripts dt: dt-extract-compatibles: Don't follow symlinks when walking tree 2023-12-13 18:39:05 +01:00
security ima: detect changes to the backing overlay file 2023-11-28 17:07:12 +00:00
sound ALSA: hda/realtek: Add supported ALC257 for ChromeOS 2023-12-08 08:51:13 +01:00
tools selftests/net: mptcp: fix uninitialized variable warnings 2023-12-08 08:51:17 +01:00
usr
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Makefile Linux 6.1.67 2023-12-11 10:41:01 +01:00
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
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There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
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