Alex Elder 0a32395fd1 net: ipa: don't overrun IPA suspend interrupt registers ... [ Upstream commit d80f8e96d4 ] In newer hardware, IPA supports more than 32 endpoints. Some registers--such as IPA interrupt registers--represent endpoints as bits in a 4-byte register, and such registers are repeated as needed to represent endpoints beyond the first 32. In ipa_interrupt_suspend_clear_all(), we clear all pending IPA suspend interrupts by reading all status register(s) and writing corresponding registers to clear interrupt conditions. Unfortunately the number of registers to read/write is calculated incorrectly, and as a result we access *many* more registers than intended. This bug occurs only when the IPA hardware signals a SUSPEND interrupt, which happens when a packet is received for an endpoint (or its underlying GSI channel) that is suspended. This situation is difficult to reproduce, but possible. Fix this by correctly computing the number of interrupt registers to read and write. This is the only place in the code where registers that map endpoints or channels this way perform this calculation. Fixes: f298ba785e ("net: ipa: add a parameter to suspend registers") Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-03-01 13:35:08 +01:00
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data	net: ipa: add IPA v5.0 configuration data	2023-03-22 22:44:00 -07:00
reg	net: ipa: fix one GSI register field width	2023-12-03 07:33:05 +01:00
gsi.c
gsi.h	net: ipa: add IPA v5.0 GSI register definitions	2023-03-22 22:44:00 -07:00
gsi_private.h
gsi_reg.c	net: ipa: add IPA v5.0 GSI register definitions	2023-03-22 22:44:00 -07:00
gsi_reg.h	net: ipa: add IPA v5.0 GSI register definitions	2023-03-22 22:44:00 -07:00
gsi_trans.c	net: ipa: compute DMA pool size properly	2023-03-29 21:27:40 -07:00
gsi_trans.h
ipa.h
ipa_cmd.c
ipa_cmd.h
ipa_data.h	net: ipa: add IPA v5.0 configuration data	2023-03-22 22:44:00 -07:00
ipa_endpoint.c	net: ipa: Use correct value for IPA_STATUS_SIZE	2023-06-01 13:29:18 +02:00
ipa_endpoint.h
ipa_gsi.c
ipa_gsi.h
ipa_interrupt.c	net: ipa: don't overrun IPA suspend interrupt registers	2024-03-01 13:35:08 +01:00
ipa_interrupt.h
ipa_main.c	net: Explicitly include correct DT includes	2023-07-27 20:33:16 -07:00
ipa_mem.c
ipa_mem.h
ipa_modem.c
ipa_modem.h
ipa_power.c	soc: qcom: aoss: Tidy up qmp_send() callers	2023-08-13 19:27:32 -07:00
ipa_power.h
ipa_qmi.c
ipa_qmi.h
ipa_qmi_msg.c
ipa_qmi_msg.h
ipa_reg.c	net: ipa: add IPA v5.0 register definitions	2023-03-22 22:44:00 -07:00
ipa_reg.h	net: ipa: add IPA v5.0 register definitions	2023-03-22 22:44:00 -07:00
ipa_resource.c
ipa_resource.h
ipa_smp2p.c
ipa_smp2p.h
ipa_sysfs.c	net: ipa: add IPA v5.0 to ipa_version_string()	2023-03-23 21:48:32 -07:00
ipa_sysfs.h
ipa_table.c	net: ipa: only reset hashed tables when supported	2023-07-25 20:34:20 -07:00
ipa_table.h
ipa_uc.c
ipa_uc.h
ipa_version.h
Kconfig
Makefile	net: ipa: add IPA v5.0 configuration data	2023-03-22 22:44:00 -07:00
reg.h