Subbaraman Narayanamurthy 4fb3523ba3 spmi: spmi-pmic-arb: Fix hw_irq overflow ... commit d19db80a366576d3ffadf2508ed876b4c1faf959 upstream. Currently, when handling the SPMI summary interrupt, the hw_irq number is calculated based on SID, Peripheral ID, IRQ index and APID. This is then passed to irq_find_mapping() to see if a mapping exists for this hw_irq and if available, invoke the interrupt handler. Since the IRQ index uses an "int" type, hw_irq which is of unsigned long data type can take a large value when SID has its MSB set to 1 and the type conversion happens. Because of this, irq_find_mapping() returns 0 as there is no mapping for this hw_irq. This ends up invoking cleanup_irq() as if the interrupt is spurious whereas it is actually a valid interrupt. Fix this by using the proper data type (u32) for id. Cc: stable@vger.kernel.org Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org> Link: https://lore.kernel.org/r/1612812784-26369-1-git-send-email-subbaram@codeaurora.org Signed-off-by: Stephen Boyd <sboyd@kernel.org> Link: https://lore.kernel.org/r/20210212031417.3148936-1-sboyd@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-03-04 11:38:40 +01:00
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spmi-pmic-arb.c
spmi.c