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Commit 9d32af66 authored by Tomoya MORINAGA's avatar Tomoya MORINAGA Committed by Grant Likely
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spi/topcliff_pch: Fix data transfer issue 



It seems spi_topcliff_pch of linux-2.6.37-rc6 degraded by previous patch.
In fact, data transfer fails on evaluation board testing.
I found like the following register miss-setting line.
Using this patch, I have confirmed data transfer can work well.

Signed-off-by: default avatarTomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
parent 89342174

drivers/spi/spi_topcliff_pch.c

+4 −4
Original line number Diff line number Diff line
@@ -267,7 +267,7 @@ static void pch_spi_handler_sub(struct pch_spi_data *data, u32 reg_spsr_val, 
	if (reg_spsr_val & SPSR_FI_BIT) {

		/* disable FI & RFI interrupts */

		pch_spi_setclr_reg(data->master, PCH_SPCR, 0,

				   SPCR_FIE_BIT | SPCR_TFIE_BIT);

				   SPCR_FIE_BIT | SPCR_RFIE_BIT);



		/* transfer is completed;inform pch_spi_process_messages */

		data->transfer_complete = true;
@@ -679,11 +679,11 @@ static void pch_spi_set_ir(struct pch_spi_data *data) 
	if ((data->bpw_len) > PCH_MAX_FIFO_DEPTH) {

		/* set receive threhold to PCH_RX_THOLD */

		pch_spi_setclr_reg(data->master, PCH_SPCR,

				   PCH_RX_THOLD << SPCR_TFIC_FIELD,

				   ~MASK_TFIC_SPCR_BITS);

				   PCH_RX_THOLD << SPCR_RFIC_FIELD,

				   ~MASK_RFIC_SPCR_BITS);

		/* enable FI and RFI interrupts */

		pch_spi_setclr_reg(data->master, PCH_SPCR,

				   SPCR_RFIE_BIT | SPCR_TFIE_BIT, 0);

				   SPCR_RFIE_BIT | SPCR_FIE_BIT, 0);

	} else {

		/* set receive threhold to maximum */

		pch_spi_setclr_reg(data->master, PCH_SPCR,