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Subject[PATCH 5.10 102/563] ath11k: Use host CE parameters for CE interrupts configuration
Date
From: Anilkumar Kolli <akolli@codeaurora.org>

[ Upstream commit b689f091aafd1a874b2f88137934276ab0fca480 ]

CE interrupt configuration uses host ce parameters to assign/free
interrupts. Use host ce parameters to enable/disable interrupts.
This patch fixes below BUG,

BUG: KASAN: global-out-of-bounds in 0xffffffbffdfb035c at addr
ffffffbffde6eeac
Read of size 4 by task kworker/u8:2/132
Address belongs to variable ath11k_core_qmi_firmware_ready+0x1b0/0x5bc [ath11k]

OOB is due to ath11k_ahb_ce_irqs_enable() iterates ce_count(which is 12)
times and accessing 12th element in target_ce_config
(which has only 11 elements) from ath11k_ahb_ce_irq_enable().

With this change host ce configs are used to enable/disable interrupts.

Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.5.0.1-00471-QCAHKSWPL_SILICONZ-1

Fixes: 967c1d1131fa ("ath11k: move target ce configs to hw_params")
Signed-off-by: Anilkumar Kolli <akolli@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1637249558-12793-1-git-send-email-akolli@codeaurora.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/ath/ath11k/ahb.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/net/wireless/ath/ath11k/ahb.c b/drivers/net/wireless/ath/ath11k/ahb.c
index 430723c64adce..e8cca58e18ffc 100644
--- a/drivers/net/wireless/ath/ath11k/ahb.c
+++ b/drivers/net/wireless/ath/ath11k/ahb.c
@@ -206,13 +206,13 @@ static void ath11k_ahb_clearbit32(struct ath11k_base *ab, u8 bit, u32 offset)

static void ath11k_ahb_ce_irq_enable(struct ath11k_base *ab, u16 ce_id)
{
- const struct ce_pipe_config *ce_config;
+ const struct ce_attr *ce_attr;

- ce_config = &ab->hw_params.target_ce_config[ce_id];
- if (__le32_to_cpu(ce_config->pipedir) & PIPEDIR_OUT)
+ ce_attr = &ab->hw_params.host_ce_config[ce_id];
+ if (ce_attr->src_nentries)
ath11k_ahb_setbit32(ab, ce_id, CE_HOST_IE_ADDRESS);

- if (__le32_to_cpu(ce_config->pipedir) & PIPEDIR_IN) {
+ if (ce_attr->dest_nentries) {
ath11k_ahb_setbit32(ab, ce_id, CE_HOST_IE_2_ADDRESS);
ath11k_ahb_setbit32(ab, ce_id + CE_HOST_IE_3_SHIFT,
CE_HOST_IE_3_ADDRESS);
@@ -221,13 +221,13 @@ static void ath11k_ahb_ce_irq_enable(struct ath11k_base *ab, u16 ce_id)

static void ath11k_ahb_ce_irq_disable(struct ath11k_base *ab, u16 ce_id)
{
- const struct ce_pipe_config *ce_config;
+ const struct ce_attr *ce_attr;

- ce_config = &ab->hw_params.target_ce_config[ce_id];
- if (__le32_to_cpu(ce_config->pipedir) & PIPEDIR_OUT)
+ ce_attr = &ab->hw_params.host_ce_config[ce_id];
+ if (ce_attr->src_nentries)
ath11k_ahb_clearbit32(ab, ce_id, CE_HOST_IE_ADDRESS);

- if (__le32_to_cpu(ce_config->pipedir) & PIPEDIR_IN) {
+ if (ce_attr->dest_nentries) {
ath11k_ahb_clearbit32(ab, ce_id, CE_HOST_IE_2_ADDRESS);
ath11k_ahb_clearbit32(ab, ce_id + CE_HOST_IE_3_SHIFT,
CE_HOST_IE_3_ADDRESS);
--
2.34.1


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