diff options
Diffstat (limited to 'drivers/net/wireless/ath/wil6210/interrupt.c')
| -rw-r--r-- | drivers/net/wireless/ath/wil6210/interrupt.c | 30 |
1 files changed, 26 insertions, 4 deletions
diff --git a/drivers/net/wireless/ath/wil6210/interrupt.c b/drivers/net/wireless/ath/wil6210/interrupt.c index 59def4f3fcf3..1835187ea075 100644 --- a/drivers/net/wireless/ath/wil6210/interrupt.c +++ b/drivers/net/wireless/ath/wil6210/interrupt.c @@ -1,5 +1,6 @@ /* * Copyright (c) 2012-2017 Qualcomm Atheros, Inc. + * Copyright (c) 2018, The Linux Foundation. All rights reserved. * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above @@ -358,6 +359,25 @@ static void wil_cache_mbox_regs(struct wil6210_priv *wil) wil_mbox_ring_le2cpus(&wil->mbox_ctl.tx); } +static bool wil_validate_mbox_regs(struct wil6210_priv *wil) +{ + size_t min_size = sizeof(struct wil6210_mbox_hdr) + + sizeof(struct wmi_cmd_hdr); + + if (wil->mbox_ctl.rx.entry_size < min_size) { + wil_err(wil, "rx mbox entry too small (%d)\n", + wil->mbox_ctl.rx.entry_size); + return false; + } + if (wil->mbox_ctl.tx.entry_size < min_size) { + wil_err(wil, "tx mbox entry too small (%d)\n", + wil->mbox_ctl.tx.entry_size); + return false; + } + + return true; +} + static irqreturn_t wil6210_irq_misc(int irq, void *cookie) { struct wil6210_priv *wil = cookie; @@ -376,8 +396,9 @@ static irqreturn_t wil6210_irq_misc(int irq, void *cookie) wil6210_mask_irq_misc(wil, false); if (isr & ISR_MISC_FW_ERROR) { - u32 fw_assert_code = wil_r(wil, RGF_FW_ASSERT_CODE); - u32 ucode_assert_code = wil_r(wil, RGF_UCODE_ASSERT_CODE); + u32 fw_assert_code = wil_r(wil, wil->rgf_fw_assert_code_addr); + u32 ucode_assert_code = + wil_r(wil, wil->rgf_ucode_assert_code_addr); wil_err(wil, "Firmware error detected, assert codes FW 0x%08x, UCODE 0x%08x\n", @@ -393,7 +414,8 @@ static irqreturn_t wil6210_irq_misc(int irq, void *cookie) if (isr & ISR_MISC_FW_READY) { wil_dbg_irq(wil, "IRQ: FW ready\n"); wil_cache_mbox_regs(wil); - set_bit(wil_status_mbox_ready, wil->status); + if (wil_validate_mbox_regs(wil)) + set_bit(wil_status_mbox_ready, wil->status); /** * Actual FW ready indicated by the * WMI_FW_READY_EVENTID @@ -545,7 +567,7 @@ static irqreturn_t wil6210_hardirq(int irq, void *cookie) if (unlikely((pseudo_cause == 0) || ((pseudo_cause & 0xff) == 0xff))) return IRQ_NONE; - /* FIXME: IRQ mask debug */ + /* IRQ mask debug */ if (unlikely(wil6210_debug_irq_mask(wil, pseudo_cause))) return IRQ_NONE; |