There is a possibility that AR_MCI_GPM_1 register can
return 0xdeadbeef and this results in caching of invalid
GPM index in ar9003_mci_is_gpm_valid. Ensure we
have appropriate checks to avoid this.
Cc: xijin luo <xijin@qca.qualcomm.com>
Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
if (first) {
gpm_ptr = MS(REG_READ(ah, AR_MCI_GPM_1), AR_MCI_GPM_WRITE_PTR);
if (first) {
gpm_ptr = MS(REG_READ(ah, AR_MCI_GPM_1), AR_MCI_GPM_WRITE_PTR);
+
+ if (gpm_ptr >= mci->gpm_len)
+ gpm_ptr = 0;
+
mci->gpm_idx = gpm_ptr;
return gpm_ptr;
}
mci->gpm_idx = gpm_ptr;
return gpm_ptr;
}
more_gpm = MCI_GPM_NOMORE;
temp_index = mci->gpm_idx;
more_gpm = MCI_GPM_NOMORE;
temp_index = mci->gpm_idx;
+
+ if (temp_index >= mci->gpm_len)
+ temp_index = 0;
+
mci->gpm_idx++;
if (mci->gpm_idx >= mci->gpm_len)
mci->gpm_idx++;
if (mci->gpm_idx >= mci->gpm_len)