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[73.185.129.58]) by smtp.gmail.com with ESMTPSA id c1sm2443014ils.21.2021.07.27.12.46.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 27 Jul 2021 12:46:34 -0700 (PDT) From: Alex Elder To: davem@davemloft.net, kuba@kernel.org Cc: bjorn.andersson@linaro.org, evgreen@chromium.org, cpratapa@codeaurora.org, subashab@codeaurora.org, elder@kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH net-next 3/4] net: ipa: get rid of some unneeded IPA interrupt code Date: Tue, 27 Jul 2021 14:46:28 -0500 Message-Id: <20210727194629.841131-4-elder@linaro.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210727194629.841131-1-elder@linaro.org> References: <20210727194629.841131-1-elder@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The pending IPA interrupts are checked by ipa_isr_thread(), and interrupts are processed only if an enabled interrupt has a condition pending. But ipa_interrupt_process_all() now makes the same check, so the one in ipa_isr_thread() can just be skipped. Also in ipa_isr_thread(), any interrupt conditions pending which are not enabled are cleared. Here too, ipa_interrupt_process_all() now clears such excess interrupt conditions, so ipa_isr_thread() doesn't have to. Signed-off-by: Alex Elder --- drivers/net/ipa/ipa_interrupt.c | 17 +---------------- 1 file changed, 1 insertion(+), 16 deletions(-) diff --git a/drivers/net/ipa/ipa_interrupt.c b/drivers/net/ipa/ipa_interrupt.c index c12d0c33557cd..d149e496ffa72 100644 --- a/drivers/net/ipa/ipa_interrupt.c +++ b/drivers/net/ipa/ipa_interrupt.c @@ -116,26 +116,11 @@ static irqreturn_t ipa_isr_thread(int irq, void *dev_id) { struct ipa_interrupt *interrupt = dev_id; struct ipa *ipa = interrupt->ipa; - u32 offset; - u32 mask; ipa_clock_get(ipa); - offset = ipa_reg_irq_stts_offset(ipa->version); - mask = ioread32(ipa->reg_virt + offset); - if (mask & interrupt->enabled) { - ipa_interrupt_process_all(interrupt); - goto out_clock_put; - } + ipa_interrupt_process_all(interrupt); - /* Nothing in the mask was supposed to cause an interrupt */ - offset = ipa_reg_irq_clr_offset(ipa->version); - iowrite32(mask, ipa->reg_virt + offset); - - dev_err(&ipa->pdev->dev, "%s: unexpected interrupt, mask 0x%08x\n", - __func__, mask); - -out_clock_put: ipa_clock_put(ipa); return IRQ_HANDLED; -- 2.27.0