samsung-sm8650/android_kernel_samsung_sm8650-modules
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Updated corresponding to - NFC_AR_00_E000_12.07.00_OpnSrc

Browse Source
This commit is contained in:
nxf35421
2021-07-02 17:51:36 +05:30
parent 22458900cc
commit f94d1b082c
4 changed files with 53 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

39
nfc/common.c
View File

@@ -224,7 +224,8 @@ int nfc_misc_register(struct nfc_dev *nfc_dev,
* Device power control. Depending on the arg value, device moves to
* different states, refer common.h for args
*
* Return: -ENOIOCTLCMD if arg is not supported, 0 in any other case
* Return: -ENOIOCTLCMD if arg is not supported, 0 if Success(or no issue)
* and error ret code otherwise
*/
static int nfc_ioctl_power_states(struct nfc_dev *nfc_dev, unsigned long arg)
{
@@ -293,7 +294,10 @@ static int nfc_ioctl_power_states(struct nfc_dev *nfc_dev, unsigned long arg)
*
* NFC and ESE Device power control, based on the argument value
*
* Return: -ENOIOCTLCMD if arg is not supported, 0 or other in any other case
* Return: -ENOIOCTLCMD if arg is not supported
* 0 if Success(or no issue)
* 0 or 1 in case of arg is ESE_GET_PWR/ESE_POWER_STATE
* and error ret code otherwise
*/
long nfc_dev_ioctl(struct file *pfile, unsigned int cmd, unsigned long arg)
{
@@ -323,8 +327,8 @@ long nfc_dev_ioctl(struct file *pfile, unsigned int cmd, unsigned long arg)
int nfc_dev_open(struct inode *inode, struct file *filp)
{
struct nfc_dev *nfc_dev =
container_of(inode->i_cdev, struct nfc_dev, c_dev);
struct nfc_dev *nfc_dev = NULL;
nfc_dev = container_of(inode->i_cdev, struct nfc_dev, c_dev);
if (!nfc_dev)
return -ENODEV;
@@ -345,10 +349,33 @@ int nfc_dev_open(struct inode *inode, struct file *filp)
return 0;
}
int nfc_dev_flush(struct file *pfile, fl_owner_t id)
{
struct nfc_dev *nfc_dev = pfile->private_data;
if (!nfc_dev)
return -ENODEV;
/*
* release blocked user thread waiting for pending read during close
*/
if (!mutex_trylock(&nfc_dev->read_mutex)) {
nfc_dev->release_read = true;
nfc_dev->nfc_disable_intr(nfc_dev);
wake_up(&nfc_dev->read_wq);
pr_debug("%s: waiting for release of blocked read\n", __func__);
mutex_lock(&nfc_dev->read_mutex);
nfc_dev->release_read = false;
} else {
pr_debug("%s: read thread already released\n", __func__);
}
mutex_unlock(&nfc_dev->read_mutex);
return 0;
}
int nfc_dev_close(struct inode *inode, struct file *filp)
{
struct nfc_dev *nfc_dev =
container_of(inode->i_cdev, struct nfc_dev, c_dev);
struct nfc_dev *nfc_dev = NULL;
nfc_dev = container_of(inode->i_cdev, struct nfc_dev, c_dev);
if (!nfc_dev)
return -ENODEV;