Author: hailfinger Date: Sat Mar 12 20:49:14 2016 New Revision: 1949 URL: http://flashrom.org/trac/flashrom/changeset/1949
Log: Specifying spispeed=reserved as programmer parameter resulted in selecting the default SPI speed instead of aborting. Rewrite the logic to be more readable.
Signed-off-by: Carl-Daniel Hailfinger c-d.hailfinger.devel.2006@gmx.net Acked-by: Stefan Tauner stefan.tauner@alumni.tuwien.ac.at
Modified: trunk/sb600spi.c
Modified: trunk/sb600spi.c ============================================================================== --- trunk/sb600spi.c Sun Mar 6 23:32:16 2016 (r1948) +++ trunk/sb600spi.c Sat Mar 12 20:49:14 2016 (r1949) @@ -387,24 +387,25 @@ static int handle_speed(struct pci_dev *dev) { uint32_t tmp; - int8_t spispeed_idx = 3; /* Default to 16.5 MHz */ + uint8_t spispeed_idx = 3; /* Default to 16.5 MHz */
char *spispeed = extract_programmer_param("spispeed"); if (spispeed != NULL) { - if (strcasecmp(spispeed, "reserved") != 0) { - int i; - for (i = 0; i < ARRAY_SIZE(spispeeds); i++) { - if (strcasecmp(spispeeds[i].name, spispeed) == 0) { - spispeed_idx = i; - break; - } + unsigned int i; + for (i = 0; i < ARRAY_SIZE(spispeeds); i++) { + if (strcasecmp(spispeeds[i].name, spispeed) == 0) { + spispeed_idx = i; + break; } - /* Only Yangtze supports the second half of indices; no 66 MHz before SB8xx. */ - if ((amd_gen < CHIPSET_YANGTZE && spispeed_idx > 3) || - (amd_gen < CHIPSET_SB89XX && spispeed_idx == 0)) - spispeed_idx = -1; } - if (spispeed_idx < 0) { + /* "reserved" is not a valid speed. + * Error out on speeds not present in the spispeeds array. + * Only Yangtze supports the second half of indices. + * No 66 MHz before SB8xx. */ + if ((strcasecmp(spispeed, "reserved") == 0) || + (i == ARRAY_SIZE(spispeeds)) || + (amd_gen < CHIPSET_YANGTZE && spispeed_idx > 3) || + (amd_gen < CHIPSET_SB89XX && spispeed_idx == 0)) { msg_perr("Error: Invalid spispeed value: '%s'.\n", spispeed); free(spispeed); return 1;