AuxXxilium/linux_dsm_epyc7002
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Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

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Pull i2c fixes from Wolfram Sang:
 "Three driver bugfixes: fixing uninitialized memory pointers (eg20t),
  pm/clock imbalance (qup), and a wrongly set cached variable (pc954x)"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: qup: skip qup_i2c_suspend if the device is already runtime suspended
  i2c: mux: pca954x: retry updating the mux selection on failure
  i2c-eg20t: fix race between i2c init and interrupt enable
This commit is contained in:
Linus Torvalds 2016-09-23 16:44:12 -07:00
commit bd5dbcb4be
3 changed files with 14 additions and 9 deletions
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18
drivers/i2c/busses/i2c-eg20t.c
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@ -773,13 +773,6 @@ static int pch_i2c_probe(struct pci_dev *pdev,
/* Set the number of I2C channel instance */ /* Set the number of I2C channel instance */
adap_info->ch_num = id->driver_data; adap_info->ch_num = id->driver_data;
ret = request_irq(pdev->irq, pch_i2c_handler, IRQF_SHARED,
KBUILD_MODNAME, adap_info);
if (ret) {
pch_pci_err(pdev, "request_irq FAILED\n");
goto err_request_irq;
}
for (i = 0; i < adap_info->ch_num; i++) { for (i = 0; i < adap_info->ch_num; i++) {
pch_adap = &adap_info->pch_data[i].pch_adapter; pch_adap = &adap_info->pch_data[i].pch_adapter;
adap_info->pch_i2c_suspended = false; adap_info->pch_i2c_suspended = false;
@ -797,6 +790,17 @@ static int pch_i2c_probe(struct pci_dev *pdev,
pch_adap->dev.of_node = pdev->dev.of_node; pch_adap->dev.of_node = pdev->dev.of_node;
pch_adap->dev.parent = &pdev->dev; pch_adap->dev.parent = &pdev->dev;
}
ret = request_irq(pdev->irq, pch_i2c_handler, IRQF_SHARED,
KBUILD_MODNAME, adap_info);
if (ret) {
pch_pci_err(pdev, "request_irq FAILED\n");
goto err_request_irq;
}
for (i = 0; i < adap_info->ch_num; i++) {
pch_adap = &adap_info->pch_data[i].pch_adapter;
pch_i2c_init(&adap_info->pch_data[i]); pch_i2c_init(&adap_info->pch_data[i]);

3
drivers/i2c/busses/i2c-qup.c
View File

@ -1599,7 +1599,8 @@ static int qup_i2c_pm_resume_runtime(struct device *device)
#ifdef CONFIG_PM_SLEEP #ifdef CONFIG_PM_SLEEP
static int qup_i2c_suspend(struct device *device) static int qup_i2c_suspend(struct device *device)
{ {
qup_i2c_pm_suspend_runtime(device); if (!pm_runtime_suspended(device))
return qup_i2c_pm_suspend_runtime(device);
return 0; return 0;
} }

2
drivers/i2c/muxes/i2c-mux-pca954x.c
View File

@ -164,7 +164,7 @@ static int pca954x_select_chan(struct i2c_mux_core *muxc, u32 chan)
/* Only select the channel if its different from the last channel */ /* Only select the channel if its different from the last channel */
if (data->last_chan != regval) { if (data->last_chan != regval) {
ret = pca954x_reg_write(muxc->parent, client, regval); ret = pca954x_reg_write(muxc->parent, client, regval);
data->last_chan = regval; data->last_chan = ret ? 0 : regval;
} }
return ret; return ret;