Change in flashrom[master]: raiden_debug_spi.c: Document where raiden_debug_spi_requests are handled

[Edward O'Callaghan (Code Review)]

Edward O'Callaghan has uploaded this change for review. ( https://review.coreboot.org/c/flashrom/+/63902 )

Change subject: raiden_debug_spi.c: Document where raiden_debug_spi_requests are handled
......................................................................

raiden_debug_spi.c: Document where raiden_debug_spi_requests are handled

Because the enum is a different name to the one within cr50 it
was entirely unclear where these values were handled at the end-point
and what a untargetted REQ_ENABLE actually did. Comment to avoid
needing to chase this again.

BUG=b:224358254
TEST=builds

Change-Id: I8cc78a85660190c9f750bf67994f0d59d69592d8
Signed-off-by: Edward O'Callaghan 
---
M raiden_debug_spi.c
1 file changed, 5 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/02/63902/1

diff --git a/raiden_debug_spi.c b/raiden_debug_spi.c
index 521539f..a0deb28 100644
--- a/raiden_debug_spi.c
+++ b/raiden_debug_spi.c
@@ -399,6 +399,7 @@
    USB_SPI_UNKNOWN_ERROR           = 0x8000,
 };

+/* Corresponds with 'enum usb_spi_request' in platform/cr50/chip/g/usb_spi.h */
 enum raiden_debug_spi_request {
    RAIDEN_DEBUG_SPI_REQ_ENABLE           = 0x0000,
    RAIDEN_DEBUG_SPI_REQ_DISABLE          = 0x0001,
@@ -1445,6 +1446,10 @@

static int get_target(void)
 {
+	/**
+	 * A untargetted REQ_ENABLE is handled as a sentinel value that
+	 * a target value was unspecified.
+	 */
    int request_enable = RAIDEN_DEBUG_SPI_REQ_ENABLE;

char *target_str = extract_programmer_param("target");