diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2013-04-09 13:50:59 (GMT) |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2013-04-09 14:01:23 (GMT) |
| commit | 835f9c38bbb4498c3d43b7466964bdadbb1fd244 (patch) | |
| tree | ade5aec66bc7ddb97048c4f141932de0f93369b9 /drivers/input/mouse/cypress_ps2.c | |
| parent | f5f29151588744ea2e283971cb0ad403ee04e3e2 (diff) | |
| parent | a937536b868b8369b98967929045f1df54234323 (diff) | |
| download | linux-fsl-qoriq-835f9c38bbb4498c3d43b7466964bdadbb1fd244.tar.xz | |
Merge tag 'v3.9-rc3' into next/multiplatform
Linux 3.9-rc3
Conflicts:
arch/arm/Kconfig
arch/arm/mach-spear/spear3xx.c
arch/arm/plat-spear/Kconfig
This is a dependency for ux500/multiplatform
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/input/mouse/cypress_ps2.c')
| -rw-r--r-- | drivers/input/mouse/cypress_ps2.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/drivers/input/mouse/cypress_ps2.c b/drivers/input/mouse/cypress_ps2.c index 1673dc6..f51765f 100644 --- a/drivers/input/mouse/cypress_ps2.c +++ b/drivers/input/mouse/cypress_ps2.c @@ -236,6 +236,13 @@ static int cypress_read_fw_version(struct psmouse *psmouse) cytp->fw_version = param[2] & FW_VERSION_MASX; cytp->tp_metrics_supported = (param[2] & TP_METRICS_MASK) ? 1 : 0; + /* + * Trackpad fw_version 11 (in Dell XPS12) yields a bogus response to + * CYTP_CMD_READ_TP_METRICS so do not try to use it. LP: #1103594. + */ + if (cytp->fw_version >= 11) + cytp->tp_metrics_supported = 0; + psmouse_dbg(psmouse, "cytp->fw_version = %d\n", cytp->fw_version); psmouse_dbg(psmouse, "cytp->tp_metrics_supported = %d\n", cytp->tp_metrics_supported); @@ -258,6 +265,9 @@ static int cypress_read_tp_metrics(struct psmouse *psmouse) cytp->tp_res_x = cytp->tp_max_abs_x / cytp->tp_width; cytp->tp_res_y = cytp->tp_max_abs_y / cytp->tp_high; + if (!cytp->tp_metrics_supported) + return 0; + memset(param, 0, sizeof(param)); if (cypress_send_ext_cmd(psmouse, CYTP_CMD_READ_TP_METRICS, param) == 0) { /* Update trackpad parameters. */ @@ -315,18 +325,15 @@ static int cypress_read_tp_metrics(struct psmouse *psmouse) static int cypress_query_hardware(struct psmouse *psmouse) { - struct cytp_data *cytp = psmouse->private; int ret; ret = cypress_read_fw_version(psmouse); if (ret) return ret; - if (cytp->tp_metrics_supported) { - ret = cypress_read_tp_metrics(psmouse); - if (ret) - return ret; - } + ret = cypress_read_tp_metrics(psmouse); + if (ret) + return ret; return 0; } |