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spi: pl022: update outdated references to pump_transfers()
The pump_transfers tasklet was removed when the driver
switched to the SPI core message processing loop in commit
9b2ef250b3 ("spi: spl022: switch to use default
spi_transfer_one_message()"). The kdoc of
pl022_interrupt_handler() still describes the old flow: scheduling
the pump_transfers tasklet, calling giveback(), and flagging
STATE_ERROR — none of which exist in the current code. Rewrite
the kdoc to reflect the current paths, which flag errors via
SPI_TRANS_FAIL_IO and call spi_finalize_current_transfer()
directly.
Assisted-by: unnamed:deepseek-v3.2 coccinelle
Signed-off-by: Kexin Sun <kexinsun@smail.nju.edu.cn>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/20260321105940.8143-1-kexinsun@smail.nju.edu.cn
Signed-off-by: Mark Brown <broonie@kernel.org>
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@@ -1127,11 +1127,11 @@ static inline void pl022_dma_remove(struct pl022 *pl022)
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*
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* This function handles interrupts generated for an interrupt based transfer.
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* If a receive overrun (ROR) interrupt is there then we disable SSP, flag the
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* current message's state as STATE_ERROR and schedule the tasklet
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* pump_transfers which will do the postprocessing of the current message by
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* calling giveback(). Otherwise it reads data from RX FIFO till there is no
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* more data, and writes data in TX FIFO till it is not full. If we complete
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* the transfer we move to the next transfer and schedule the tasklet.
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* current transfer with SPI_TRANS_FAIL_IO and call
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* spi_finalize_current_transfer() to let the core finish the message.
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* Otherwise it reads data from RX FIFO till there is no more data, and writes
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* data in TX FIFO till it is not full. When the transfer is complete we call
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* spi_finalize_current_transfer() so the core can schedule the next one.
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*/
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static irqreturn_t pl022_interrupt_handler(int irq, void *dev_id)
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{
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