input: touch: Raydium: Code drop v61.5

[1] Partially resolve user space pointer directly used in kernel driver (except DEV_ATTR part)
[2] Report mode switch support
[3] Refine multiple input devices and input protocol A
[4] Support eraser
[5] Implement mechanism to ensure multi-resume/suspend will be correctly executed
[6] Fix CS cmd fail issue
[7] Fix fast draw suffered from line broken issue
[8] Fix idle mode stability on Ardbeg issue

Bug 1414130
Bug 1408503
Bug 1398820
Bug 1398173
Bug 1371286
Bug 1392722

Change-Id: Icbd9250339a04f60390d5247e37aad3bfc49c526
Reviewed-on: http://git-master/r/346650
GVS: Gerrit_Virtual_Submit
Reviewed-by: Xiaohui Tao <xtao@nvidia.com>
Tested-by: Xiaohui Tao <xtao@nvidia.com>
Reviewed-by: Mitch Luban <mluban@nvidia.com>

1 files changed, 4 insertions, 60 deletions

diff --git a/drivers/input/touchscreen/rm31080a_ctrl.c b/drivers/input/touchscreen/rm31080a_ctrl.c
index f95c7f449..68f0201bc 100644
--- a/drivers/input/touchscreen/rm31080a_ctrl.c
+++ b/drivers/input/touchscreen/rm31080a_ctrl.c
@@ -30,65 +30,6 @@ struct rm_tch_ctrl_para g_stCtrl;
 /*=============================================================================
         FUNCTION DECLARATION
 =============================================================================*/
-
-/*=============================================================================
-        Description:
-                        Control functions for Touch IC
-        Input:
-
-        Output:
-
-=============================================================================*/
-int rm_tch_ctrl_clear_int(void)
-{
-        u8 flag;
-        if (g_stCtrl.bICVersion >= 0xD0)
-                return rm_tch_spi_byte_read(0x72, &flag);
-        else
-                return rm_tch_spi_byte_read(0x02, &flag);
-}
-
-int rm_tch_ctrl_scan_start(void)
-{
-        return rm_tch_spi_byte_write(RM31080_REG_11, 0x17);
-}
-
-void rm_tch_ctrl_wait_for_scan_finish(void)
-{
-        u8 u8reg11;
-        int i;
-        /*50ms = 20Hz*/
-        for (i = 0; i < 50; i++) {
-                rm_tch_spi_byte_read(RM31080_REG_11, &u8reg11);
-                if (u8reg11 & 0x01)
-                        usleep_range(1000, 2000);/* msleep(1); */
-                else
-                        break;
-        }
-}
-
-/*=============================================================================
-        Description:
-
-        Input:
-                        N/A
-        Output:
-                        N/A
-=============================================================================*/
-void rm_set_repeat_times(u8 u8Times)
-{
-        u8 bReg1_1Fh = 0x00;
-
-        rm_tch_spi_byte_write(0x0E, u8Times&0x1F);
-
-        bReg1_1Fh &= ~FILTER_NONTHRESHOLD_MODE;
-
-        if (u8Times != REPEAT_1)
-                bReg1_1Fh |= 0x44;
-
-        rm_tch_spi_byte_write(RM31080_REG_1F, bReg1_1Fh);
-}
-
 /*=============================================================================
         Description:
 
@@ -129,7 +70,10 @@ unsigned char rm_tch_ctrl_get_idle_mode(u8 *p)
 =============================================================================*/
 void rm_tch_ctrl_set_parameter(void *arg)
 {
-        memcpy(&g_stCtrl, arg, sizeof(struct rm_tch_ctrl_para));
+        ssize_t missing;
+        missing = copy_from_user(&g_stCtrl, arg, sizeof(struct rm_tch_ctrl_para));
+        if (missing)
+                return;
 }
 
 /*===========================================================================*/