From: Macpaul Lin Date: Thu, 13 Sep 2012 10:11:55 +0000 (+0800) Subject: staging/gdm72xx: usb_boot: replace firmware upgrade API X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=1839c7ebd9;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git staging/gdm72xx: usb_boot: replace firmware upgrade API Replace file I/O of reading firmware usb_boot() by request_firmware(). Signed-off-by: Macpaul Lin Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/gdm72xx/usb_boot.c b/drivers/staging/gdm72xx/usb_boot.c index 78a16d8eee6a..80870a06d026 100644 --- a/drivers/staging/gdm72xx/usb_boot.c +++ b/drivers/staging/gdm72xx/usb_boot.c @@ -18,6 +18,7 @@ #include #include #include +#include #include #include "gdm_usb.h" @@ -28,11 +29,9 @@ #define DOWNLOAD_SIZE 1024 -#define DH2B(x) __cpu_to_be32(x) -#define DL2H(x) __le32_to_cpu(x) - #define MAX_IMG_CNT 16 -#define UIMG_PATH "/lib/firmware/gdm72xx/gdmuimg.bin" +#define FW_DIR "gdm72xx/" +#define FW_UIMG "gdmuimg.bin" #define KERN_PATH "/lib/firmware/gdm72xx/zImage" #define FS_PATH "/lib/firmware/gdm72xx/ramdisk.jffs2" @@ -69,7 +68,7 @@ static void array_le32_to_cpu(u32 *arr, int num) { int i; for (i = 0; i < num; i++, arr++) - *arr = DL2H(*arr); + *arr = __le32_to_cpu(*arr); } static u8 *tx_buf; @@ -105,44 +104,37 @@ static int gdm_wibro_recv(struct usb_device *usbdev, void *data, int len) return 0; } -static int download_image(struct usb_device *usbdev, struct file *filp, - loff_t *pos, u32 img_len, u32 magic_num) +static int download_image(struct usb_device *usbdev, + const struct firmware *firm, + loff_t pos, u32 img_len, u32 magic_num) { struct dn_header h; int ret = 0; u32 size; - int len, readn; - size = (img_len + DOWNLOAD_SIZE - 1) & ~(DOWNLOAD_SIZE - 1); - h.magic_num = DH2B(magic_num); - h.file_size = DH2B(size); + size = ALIGN(img_len, DOWNLOAD_SIZE); + h.magic_num = __cpu_to_be32(magic_num); + h.file_size = __cpu_to_be32(size); ret = gdm_wibro_send(usbdev, &h, sizeof(h)); if (ret < 0) - goto out; + return ret; - readn = 0; - while ((len = filp->f_op->read(filp, tx_buf, DOWNLOAD_SIZE, pos))) { + while (img_len > 0) { + if (img_len > DOWNLOAD_SIZE) + size = DOWNLOAD_SIZE; + else + size = img_len; /* the last chunk of data */ - if (len < 0) { - ret = -1; - goto out; - } - readn += len; + memcpy(tx_buf, firm->data + pos, size); + ret = gdm_wibro_send(usbdev, tx_buf, size); - ret = gdm_wibro_send(usbdev, tx_buf, DOWNLOAD_SIZE); if (ret < 0) - goto out; - if (readn >= img_len) - break; - } + return ret; - if (readn < img_len) { - printk(KERN_ERR "gdmwm: Cannot read to the requested size. " - "Read = %d Requested = %d\n", readn, img_len); - ret = -EIO; + img_len -= size; + pos += size; } -out: return ret; } @@ -150,14 +142,19 @@ out: int usb_boot(struct usb_device *usbdev, u16 pid) { int i, ret = 0; - struct file *filp = NULL; - struct inode *inode = NULL; - static mm_segment_t fs; struct img_header hdr; struct fw_info fw_info; loff_t pos = 0; - char *img_name = UIMG_PATH; - int len; + char *img_name = FW_DIR FW_UIMG; + const struct firmware *firm; + + ret = request_firmware(&firm, img_name, &usbdev->dev); + if (ret < 0) { + printk(KERN_ERR + "requesting firmware %s failed with error %d\n", + img_name, ret); + return ret; + } tx_buf = kmalloc(DOWNLOAD_SIZE, GFP_KERNEL); if (tx_buf == NULL) { @@ -165,29 +162,12 @@ int usb_boot(struct usb_device *usbdev, u16 pid) return -ENOMEM; } - fs = get_fs(); - set_fs(get_ds()); - - filp = filp_open(img_name, O_RDONLY | O_LARGEFILE, 0); - if (IS_ERR(filp)) { - printk(KERN_ERR "Can't find %s.\n", img_name); - ret = PTR_ERR(filp); - goto restore_fs; - } - - inode = filp->f_dentry->d_inode; - if (!S_ISREG(inode->i_mode)) { - printk(KERN_ERR "Invalid file type: %s\n", img_name); - ret = -EINVAL; - goto out; - } - - len = filp->f_op->read(filp, (u8 *)&hdr, sizeof(hdr), &pos); - if (len != sizeof(hdr)) { + if (firm->size < sizeof(hdr)) { printk(KERN_ERR "gdmwm: Cannot read the image info.\n"); ret = -EIO; goto out; } + memcpy(&hdr, firm->data, sizeof(hdr)); array_le32_to_cpu((u32 *)&hdr, 19); #if 0 @@ -215,13 +195,12 @@ int usb_boot(struct usb_device *usbdev, u16 pid) } pos = hdr.offset[i]; - len = filp->f_op->read(filp, (u8 *)&fw_info, sizeof(fw_info), - &pos); - if (len != sizeof(fw_info)) { + if (firm->size < sizeof(fw_info) + pos) { printk(KERN_ERR "gdmwm: Cannot read the FW info.\n"); ret = -EIO; goto out; } + memcpy(&fw_info, firm->data + pos, sizeof(fw_info)); array_le32_to_cpu((u32 *)&fw_info, 8); #if 0 @@ -237,14 +216,23 @@ int usb_boot(struct usb_device *usbdev, u16 pid) continue; pos = hdr.offset[i] + fw_info.kernel_offset; - ret = download_image(usbdev, filp, &pos, fw_info.kernel_len, - DN_KERNEL_MAGIC_NUMBER); + if (firm->size < fw_info.kernel_len + pos) { + printk(KERN_ERR "gdmwm: Kernel FW is too small.\n"); + goto out; + } + + ret = download_image(usbdev, firm, pos, + fw_info.kernel_len, DN_KERNEL_MAGIC_NUMBER); if (ret < 0) goto out; printk(KERN_INFO "GCT: Kernel download success.\n"); pos = hdr.offset[i] + fw_info.rootfs_offset; - ret = download_image(usbdev, filp, &pos, fw_info.rootfs_len, + if (firm->size < fw_info.rootfs_len + pos) { + printk(KERN_ERR "gdmwm: Filesystem FW is too small.\n"); + goto out; + } + ret = download_image(usbdev, firm, pos, fw_info.rootfs_len, DN_ROOTFS_MAGIC_NUMBER); if (ret < 0) goto out; @@ -258,10 +246,7 @@ int usb_boot(struct usb_device *usbdev, u16 pid) ret = -EINVAL; } out: - filp_close(filp, NULL); - -restore_fs: - set_fs(fs); + release_firmware(firm); kfree(tx_buf); return ret; }