From: Suma Hegde <suma.hegde@xxxxxxx> Having a separate platform device structure helps in future, to contain platform specific variables and other data. Signed-off-by: Suma Hegde <suma.hegde@xxxxxxx> Reviewed-by: Naveen Krishna Chatradhi <nchatrad@xxxxxxx> --- drivers/platform/x86/amd/hsmp.c | 53 ++++++++++++++++++++------------- 1 file changed, 33 insertions(+), 20 deletions(-) diff --git a/drivers/platform/x86/amd/hsmp.c b/drivers/platform/x86/amd/hsmp.c index 31382ef52efb..699c22f7cd42 100644 --- a/drivers/platform/x86/amd/hsmp.c +++ b/drivers/platform/x86/amd/hsmp.c @@ -47,9 +47,20 @@ #define HSMP_INDEX_REG 0xc4 #define HSMP_DATA_REG 0xc8 -static struct semaphore *hsmp_sem; +struct hsmp_socket { + struct semaphore hsmp_sem; + u16 sock_ind; +}; + +struct hsmp_plat_device { + struct miscdevice hsmp_device; + struct hsmp_socket *sock; + struct device *dev; +}; -static struct miscdevice hsmp_device; +static u16 num_sockets; + +static struct hsmp_plat_device plat_dev; static int amd_hsmp_rdwr(struct pci_dev *root, u32 address, u32 *value, bool write) @@ -188,6 +199,7 @@ static int validate_message(struct hsmp_message *msg) int hsmp_send_message(struct hsmp_message *msg) { + struct hsmp_socket *sock = &plat_dev.sock[msg->sock_ind]; struct amd_northbridge *nb; int ret; @@ -208,14 +220,13 @@ int hsmp_send_message(struct hsmp_message *msg) * In SMP system timeout of 100 millisecs should * be enough for the previous thread to finish the operation */ - ret = down_timeout(&hsmp_sem[msg->sock_ind], - msecs_to_jiffies(HSMP_MSG_TIMEOUT)); + ret = down_timeout(&sock->hsmp_sem, msecs_to_jiffies(HSMP_MSG_TIMEOUT)); if (ret < 0) return ret; ret = __hsmp_send_message(nb->root, msg); - up(&hsmp_sem[msg->sock_ind]); + up(&sock->hsmp_sem); return ret; } @@ -321,28 +332,31 @@ static int hsmp_pltdrv_probe(struct platform_device *pdev) { int i; - hsmp_sem = devm_kzalloc(&pdev->dev, - (amd_nb_num() * sizeof(struct semaphore)), - GFP_KERNEL); - if (!hsmp_sem) + plat_dev.sock = devm_kzalloc(&pdev->dev, + (num_sockets * sizeof(struct hsmp_socket)), + GFP_KERNEL); + if (!plat_dev.sock) return -ENOMEM; + plat_dev.dev = &pdev->dev; - for (i = 0; i < amd_nb_num(); i++) - sema_init(&hsmp_sem[i], 1); + for (i = 0; i < num_sockets; i++) { + sema_init(&plat_dev.sock[i].hsmp_sem, 1); + plat_dev.sock[i].sock_ind = i; + } - hsmp_device.name = "hsmp_cdev"; - hsmp_device.minor = MISC_DYNAMIC_MINOR; - hsmp_device.fops = &hsmp_fops; - hsmp_device.parent = &pdev->dev; - hsmp_device.nodename = "hsmp"; - hsmp_device.mode = 0644; + plat_dev.hsmp_device.name = "hsmp_cdev"; + plat_dev.hsmp_device.minor = MISC_DYNAMIC_MINOR; + plat_dev.hsmp_device.fops = &hsmp_fops; + plat_dev.hsmp_device.parent = &pdev->dev; + plat_dev.hsmp_device.nodename = "hsmp"; + plat_dev.hsmp_device.mode = 0644; - return misc_register(&hsmp_device); + return misc_register(&plat_dev.hsmp_device); } static void hsmp_pltdrv_remove(struct platform_device *pdev) { - misc_deregister(&hsmp_device); + misc_deregister(&plat_dev.hsmp_device); } static struct platform_driver amd_hsmp_driver = { @@ -358,7 +372,6 @@ static struct platform_device *amd_hsmp_platdev; static int __init hsmp_plt_init(void) { int ret = -ENODEV; - u16 num_sockets; int i; if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD || boot_cpu_data.x86 < 0x19) { -- 2.25.1