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| author | Andrzej Pietrasiewicz <andrzej.p@samsung.com> | 2013-09-26 16:38:16 +0400 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2013-10-01 18:50:57 +0400 |
| commit | 6fdc5dd25e0cd5afc114fe65427150c65f0eb67b (patch) | |
| tree | 36d30eff7d42a7ddb4ca76d6387888bb892803be /drivers/usb/gadget/acm_ms.c | |
| parent | 092a4bd069fcca09f345a79c8abdc945cf6b1b57 (diff) | |
| download | linux-6fdc5dd25e0cd5afc114fe65427150c65f0eb67b.tar.xz | |
usb: gadget: create a utility module for mass_storage
Converting to configfs requires making the f_mass_storage.c a module.
But first we need to get rid of "#include "storage_common.c".
This patch makes storage_common.c a separately compiled file, which is
built as a utility module named u_ms.ko. After all mass storage users are
converted to the new function interface this module can be eliminated
by merging it with the mass storage function's module.
USB descriptors are exported so that they can be accessed from
f_mass_storage.
FSG_VENDOR_ID and FSG_PRODUCT_ID are moved to their only user.
Handling of CONFIG_USB_GADGET_DEBUG_FILES is moved to f_mass_storage.c.
The fsg_num_buffers static is moved to FSG_MODULE_PARAMETER users, so
instead of using a global variable the f_mass_storage introduces
fsg_num_buffers member in fsg_common (and fsg_config).
fsg_strings and fsg_stringtab are moved to f_mass_storage.c.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/gadget/acm_ms.c')
| -rw-r--r-- | drivers/usb/gadget/acm_ms.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/usb/gadget/acm_ms.c b/drivers/usb/gadget/acm_ms.c index 4b947bb50f62..992ffb00272f 100644 --- a/drivers/usb/gadget/acm_ms.c +++ b/drivers/usb/gadget/acm_ms.c @@ -104,6 +104,20 @@ static struct usb_gadget_strings *dev_strings[] = { /****************************** Configurations ******************************/ static struct fsg_module_parameters fsg_mod_data = { .stall = 1 }; +#ifdef CONFIG_USB_GADGET_DEBUG_FILES + +static unsigned int fsg_num_buffers = CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS; + +#else + +/* + * Number of buffers we will use. + * 2 is usually enough for good buffering pipeline + */ +#define fsg_num_buffers CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS + +#endif /* CONFIG_USB_DEBUG */ + FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data); static struct fsg_common fsg_common; @@ -167,7 +181,8 @@ static int __init acm_ms_bind(struct usb_composite_dev *cdev) void *retp; /* set up mass storage function */ - retp = fsg_common_from_params(&fsg_common, cdev, &fsg_mod_data); + retp = fsg_common_from_params(&fsg_common, cdev, &fsg_mod_data, + fsg_num_buffers); if (IS_ERR(retp)) { status = PTR_ERR(retp); return PTR_ERR(retp); |