From d4970a9d9ba3c7d51a3fad91b6db09577af5bafe Mon Sep 17 00:00:00 2001 From: Peter Colberg Date: Tue, 19 Nov 2024 20:10:18 -0500 Subject: [PATCH] fpga: dfl: return platform data from dfl_fpga_inode_to_feature_dev_data() Refactor dfl_fpga_inode_to_feature_dev() to directly return the feature device platform data instead of the platform device, and retrieve the device from the data. The null pointer checks are not needed since the platform device is guaranteed to have associated feature device data. This patch is part of a refactoring of the internal DFL APIs to move the feature device data into a new struct dfl_feature_dev_data which lifetime is independent of the corresponding platform device. Signed-off-by: Peter Colberg Reviewed-by: Matthew Gerlach Reviewed-by: Basheer Ahmed Muddebihal Acked-by: Xu Yilun Link: https://lore.kernel.org/r/20241120011035.230574-3-peter.colberg@intel.com Signed-off-by: Xu Yilun --- drivers/fpga/dfl-afu-main.c | 8 ++------ drivers/fpga/dfl-fme-main.c | 7 ++----- drivers/fpga/dfl.h | 6 +++--- 3 files changed, 7 insertions(+), 14 deletions(-) diff --git a/drivers/fpga/dfl-afu-main.c b/drivers/fpga/dfl-afu-main.c index 2fd4f07ed081..4f7555c08d2d 100644 --- a/drivers/fpga/dfl-afu-main.c +++ b/drivers/fpga/dfl-afu-main.c @@ -595,14 +595,10 @@ static struct dfl_feature_driver port_feature_drvs[] = { static int afu_open(struct inode *inode, struct file *filp) { - struct platform_device *fdev = dfl_fpga_inode_to_feature_dev(inode); - struct dfl_feature_platform_data *pdata; + struct dfl_feature_platform_data *pdata = dfl_fpga_inode_to_feature_dev_data(inode); + struct platform_device *fdev = pdata->dev; int ret; - pdata = dev_get_platdata(&fdev->dev); - if (WARN_ON(!pdata)) - return -ENODEV; - mutex_lock(&pdata->lock); ret = dfl_feature_dev_use_begin(pdata, filp->f_flags & O_EXCL); if (!ret) { diff --git a/drivers/fpga/dfl-fme-main.c b/drivers/fpga/dfl-fme-main.c index f8d89a4a6ccb..0fb996d79835 100644 --- a/drivers/fpga/dfl-fme-main.c +++ b/drivers/fpga/dfl-fme-main.c @@ -598,13 +598,10 @@ static long fme_ioctl_check_extension(struct dfl_feature_platform_data *pdata, static int fme_open(struct inode *inode, struct file *filp) { - struct platform_device *fdev = dfl_fpga_inode_to_feature_dev(inode); - struct dfl_feature_platform_data *pdata = dev_get_platdata(&fdev->dev); + struct dfl_feature_platform_data *pdata = dfl_fpga_inode_to_feature_dev_data(inode); + struct platform_device *fdev = pdata->dev; int ret; - if (WARN_ON(!pdata)) - return -ENODEV; - mutex_lock(&pdata->lock); ret = dfl_feature_dev_use_begin(pdata, filp->f_flags & O_EXCL); if (!ret) { diff --git a/drivers/fpga/dfl.h b/drivers/fpga/dfl.h index 5063d73b0d82..2285215f444e 100644 --- a/drivers/fpga/dfl.h +++ b/drivers/fpga/dfl.h @@ -398,14 +398,14 @@ int dfl_fpga_dev_ops_register(struct platform_device *pdev, struct module *owner); void dfl_fpga_dev_ops_unregister(struct platform_device *pdev); -static inline -struct platform_device *dfl_fpga_inode_to_feature_dev(struct inode *inode) +static inline struct dfl_feature_platform_data * +dfl_fpga_inode_to_feature_dev_data(struct inode *inode) { struct dfl_feature_platform_data *pdata; pdata = container_of(inode->i_cdev, struct dfl_feature_platform_data, cdev); - return pdata->dev; + return pdata; } #define dfl_fpga_dev_for_each_feature(pdata, feature) \ -- 2.25.1