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Commit 375cac70 authored by Benjamin Herrenschmidt's avatar Benjamin Herrenschmidt
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fsi: master-ast-cf: Mask unused bits in RTAG/RCRC 



Then reading the RTAG/RCRC "registers" from the coprocessor after
a command is complete, mask out the top bits, only keep the relevant
bits. Microcode v5 will leave garbage in those top bits as a
result of a performance optimization.

Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
---
parent d0cff240

drivers/fsi/fsi-master-ast-cf.c

+2 −2
Original line number Diff line number Diff line
@@ -377,8 +377,8 @@ static int send_request(struct fsi_master_acf *master, struct fsi_msg *cmd, 
static int read_copro_response(struct fsi_master_acf *master, uint8_t size,

			       uint32_t *response, u8 *tag)

{

	uint8_t rtag = ioread8(master->sram + STAT_RTAG);

	uint8_t rcrc = ioread8(master->sram + STAT_RCRC);

	uint8_t rtag = ioread8(master->sram + STAT_RTAG) & 0xf;

	uint8_t rcrc = ioread8(master->sram + STAT_RCRC) & 0xf;

	uint32_t rdata = 0;

	uint32_t crc;

	uint8_t ack;