d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Don't try to turn power down MMC bus if it is already down

Browse Source 
Regulator framework doens't like turning off already turned off
regulators, so we get panic on AllWinner boards.

Approved by:	imp (mentor)
Differential Revision:	https://reviews.freebsd.org/D15890
This commit is contained in:
Ilya Bakulin 2018-06-19 11:28:50 +00:00
parent 4c4200c6d9
commit 8b0e085f65
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=335367
1 changed files with 8 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
sys/cam/mmc/mmc_xpt.c
View File

@ -574,14 +574,16 @@ mmcprobe_start(struct cam_periph *periph, union ccb *start_ccb)
/* FALLTHROUGH */
case PROBE_IDENTIFY:
xpt_path_inq(&start_ccb->cpi, periph->path);
CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_PROBE, ("Start with PROBE_RESET\n"));
init_standard_ccb(start_ccb, XPT_SET_TRAN_SETTINGS);
cts->ios.power_mode = power_off;
cts->ios_valid = MMC_PM;
init_standard_ccb(start_ccb, XPT_GET_TRAN_SETTINGS);
xpt_action(start_ccb);
mtx_sleep(periph, p_mtx, 0, "mmcios", 100);
if (cts->ios.power_mode != power_off) {
init_standard_ccb(start_ccb, XPT_SET_TRAN_SETTINGS);
cts->ios.power_mode = power_off;
cts->ios_valid = MMC_PM;
xpt_action(start_ccb);
mtx_sleep(periph, p_mtx, 0, "mmcios", 100);
}
/* mmc_power_up */
/* Get the host OCR */
init_standard_ccb(start_ccb, XPT_GET_TRAN_SETTINGS);