Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

Pull i2c fix from Wolfram Sang:
 "A regression fix for I2C that would be great to have in rc2"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: designware: don't infer timings described by ACPI from clock rate

1 files changed, 10 insertions, 8 deletions

diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
index f2acd4b6bf01..6283b99d2b17 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -96,6 +96,7 @@ static int dw_i2c_acpi_configure(struct platform_device *pdev)
         struct dw_i2c_dev *dev = platform_get_drvdata(pdev);
         acpi_handle handle = ACPI_HANDLE(&pdev->dev);
         const struct acpi_device_id *id;
+        u32 ss_ht, fp_ht, hs_ht, fs_ht;
         struct acpi_device *adev;
         const char *uid;
 
@@ -107,23 +108,24 @@ static int dw_i2c_acpi_configure(struct platform_device *pdev)
          * Try to get SDA hold time and *CNT values from an ACPI method for
          * selected speed modes.
          */
+        dw_i2c_acpi_params(pdev, "SSCN", &dev->ss_hcnt, &dev->ss_lcnt, &ss_ht);
+        dw_i2c_acpi_params(pdev, "FPCN", &dev->fp_hcnt, &dev->fp_lcnt, &fp_ht);
+        dw_i2c_acpi_params(pdev, "HSCN", &dev->hs_hcnt, &dev->hs_lcnt, &hs_ht);
+        dw_i2c_acpi_params(pdev, "FMCN", &dev->fs_hcnt, &dev->fs_lcnt, &fs_ht);
+
         switch (dev->clk_freq) {
         case 100000:
-                dw_i2c_acpi_params(pdev, "SSCN", &dev->ss_hcnt, &dev->ss_lcnt,
-                                   &dev->sda_hold_time);
+                dev->sda_hold_time = ss_ht;
                 break;
         case 1000000:
-                dw_i2c_acpi_params(pdev, "FPCN", &dev->fp_hcnt, &dev->fp_lcnt,
-                                   &dev->sda_hold_time);
+                dev->sda_hold_time = fp_ht;
                 break;
         case 3400000:
-                dw_i2c_acpi_params(pdev, "HSCN", &dev->hs_hcnt, &dev->hs_lcnt,
-                                   &dev->sda_hold_time);
+                dev->sda_hold_time = hs_ht;
                 break;
         case 400000:
         default:
-                dw_i2c_acpi_params(pdev, "FMCN", &dev->fs_hcnt, &dev->fs_lcnt,
-                                   &dev->sda_hold_time);
+                dev->sda_hold_time = fs_ht;
                 break;
         }