[ath9k] Fix buffer overrun for ar9287

This backport is from linux kernel upstream commit 83d6f1f ("ath9k:
fix buffer overrun for ar9287").

Signed-off-by: Christian Hesse <mail@eworm.de>
Signed-off-by: Michael Brown <mcb30@ipxe.org>

diff --git a/src/drivers/net/ath/ath9k/ath9k_eeprom.c b/src/drivers/net/ath/ath9k/ath9k_eeprom.c
index f552acaa34cbc3fc726c19be06005b5818258728..a20423790c08cd2fdeea00d10e38863431d56b99 100644 (file)
--- a/src/drivers/net/ath/ath9k/ath9k_eeprom.c
+++ b/src/drivers/net/ath/ath9k/ath9k_eeprom.c
@@ -368,10 +368,9 @@ void ath9k_hw_get_gain_boundaries_pdadcs(struct ath_hw *ah,
 
        if (match) {
                if (AR_SREV_9287(ah)) {
-                       /* FIXME: array overrun? */
                        for (i = 0; i < numXpdGains; i++) {
                                minPwrT4[i] = data_9287[idxL].pwrPdg[i][0];
-                               maxPwrT4[i] = data_9287[idxL].pwrPdg[i][4];
+                               maxPwrT4[i] = data_9287[idxL].pwrPdg[i][intercepts - 1];
                                ath9k_hw_fill_vpd_table(minPwrT4[i], maxPwrT4[i],
                                                data_9287[idxL].pwrPdg[i],
                                                data_9287[idxL].vpdPdg[i],
@@ -381,7 +380,7 @@ void ath9k_hw_get_gain_boundaries_pdadcs(struct ath_hw *ah,
                } else if (eeprom_4k) {
                        for (i = 0; i < numXpdGains; i++) {
                                minPwrT4[i] = data_4k[idxL].pwrPdg[i][0];
-                               maxPwrT4[i] = data_4k[idxL].pwrPdg[i][4];
+                               maxPwrT4[i] = data_4k[idxL].pwrPdg[i][intercepts - 1];
                                ath9k_hw_fill_vpd_table(minPwrT4[i], maxPwrT4[i],
                                                data_4k[idxL].pwrPdg[i],
                                                data_4k[idxL].vpdPdg[i],
@@ -391,7 +390,7 @@ void ath9k_hw_get_gain_boundaries_pdadcs(struct ath_hw *ah,
                } else {
                        for (i = 0; i < numXpdGains; i++) {
                                minPwrT4[i] = data_def[idxL].pwrPdg[i][0];
-                               maxPwrT4[i] = data_def[idxL].pwrPdg[i][4];
+                               maxPwrT4[i] = data_def[idxL].pwrPdg[i][intercepts - 1];
                                ath9k_hw_fill_vpd_table(minPwrT4[i], maxPwrT4[i],
                                                data_def[idxL].pwrPdg[i],
                                                data_def[idxL].vpdPdg[i],