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-rw-r--r--src/drivers/spi/spi_flash.c25
1 files changed, 15 insertions, 10 deletions
diff --git a/src/drivers/spi/spi_flash.c b/src/drivers/spi/spi_flash.c
index f2714791db..82333e9b0f 100644
--- a/src/drivers/spi/spi_flash.c
+++ b/src/drivers/spi/spi_flash.c
@@ -82,24 +82,29 @@ static int spi_flash_cmd_read(const struct spi_slave *spi, const u8 *cmd,
return ret;
}
-/* TODO: This code is quite possibly broken and overflowing stacks. Fix ASAP! */
-#pragma GCC diagnostic push
-#if defined(__GNUC__) && !defined(__clang__)
-#pragma GCC diagnostic ignored "-Wstack-usage="
-#endif
int spi_flash_cmd_write(const struct spi_slave *spi, const u8 *cmd,
size_t cmd_len, const void *data, size_t data_len)
{
- int ret;
- u8 buff[cmd_len + data_len];
- memcpy(buff, cmd, cmd_len);
- memcpy(buff + cmd_len, data, data_len);
+ int ret = 1;
+ struct spi_op vectors[] = {
+ [0] = { .dout = cmd, .bytesout = cmd_len,
+ .din = NULL, .bytesin = 0, },
+ [1] = { .dout = data, .bytesout = data_len,
+ .din = NULL, .bytesin = 0, }
+ };
+ size_t count = ARRAY_SIZE(vectors);
+
+ if (spi_claim_bus(spi))
+ return ret;
+
+ if (spi_xfer_vector(spi, vectors, count) == 0)
+ ret = 0;
- ret = do_spi_flash_cmd(spi, buff, cmd_len + data_len, NULL, 0);
if (ret) {
printk(BIOS_WARNING, "SF: Failed to send write command (%zu bytes): %d\n",
data_len, ret);
}
+ spi_release_bus(spi);
return ret;
}