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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 12/08/2024 15:41, Depeng Shao wrote: > + writel(1, csid->base + CSID_TOP_IRQ_CLEAR); > + writel(1, csid->base + CSID_IRQ_CMD); CSID_IRQ_CMD bit(0) = CMD_CLEAR > + writel(1, csid->base + CSID_TOP_IRQ_MASK); > + > + for (i = 0; i < MSM_CSID_MAX_SRC_STREAMS; i++) > + if (csid->phy.en_vc & BIT(i)) { > + writel(BIT(BUF_DONE_IRQ_STATUS_RDI_OFFSET + i), > + csid->base + CSID_BUF_DONE_IRQ_CLEAR); > + writel(0x1 << IRQ_CMD_CLEAR, csid->base + CSID_IRQ_CMD); CSID_IRQ_CMD bit(0) = CMD_CLEAR and again here. > + writel(BIT(BUF_DONE_IRQ_STATUS_RDI_OFFSET + i), > + csid->base + CSID_BUF_DONE_IRQ_MASK); > + } re: previous comments 1. Please define bits so that'd be #define CSID_IRQ_CMD_CLEAR BIT(0) writel(CSID_IRQ_CMD_CLEAR, csid->base + CSID_IRQ_CMD); There's no value in circumscribing the meaning of bitfields in upstream code, we just make our own lives easier by having self-documenting code. TL;DR please name your bits - a blanket statement for the series. 2. And as mentioned above, you don't need to execute that clear n times in a loop. Just do it once at the top of the routine. --- bod