[U-Boot] [PATCH 1/4] usb: ums: move ums code from trats to Samsung common directory

[Przemyslaw Marczak]

Hello Marek,
Thank you for fast reply.

On 10/17/2013 07:39 PM, Marek Vasut wrote:
> Dear Przemyslaw Marczak,
>
>> UMS init was implemented in trats board file but mostly it comprises
>> common code. Due to that it has been moved to common/ums.c to avoid
>> code duplication in the future.
>>
>> Changes:
>> - move ums initialization code from trats to common/ums.c
>> - remove unused CONFIG_USB_GADGET_MASS_STORAGE from trats.h
>>
>> Signed-off-by: Przemyslaw Marczak <p.marczak at samsung.com>
>> Cc: Marek Vasut <marex at denx.de>
>> Cc: Minkyu Kang <mk7.kang at samsung.com>
>> Cc: Lukasz Majewski <l.majewski at samsung.com>
>> ---
>>   board/samsung/common/Makefile |    1 +
>>   board/samsung/common/ums.c    |   66
>> +++++++++++++++++++++++++++++++++++++++++ board/samsung/trats/trats.c   |
>>   62 -------------------------------------- include/configs/trats.h       |
>>     2 --
>>   4 files changed, 67 insertions(+), 64 deletions(-)
>>   create mode 100644 board/samsung/common/ums.c
>>
>> diff --git a/board/samsung/common/Makefile b/board/samsung/common/Makefile
>> index ad7564c..d122169 100644
>> --- a/board/samsung/common/Makefile
>> +++ b/board/samsung/common/Makefile
>> @@ -11,6 +11,7 @@ LIB	= $(obj)libsamsung.o
>>
>>   COBJS-$(CONFIG_SOFT_I2C_MULTI_BUS) += multi_i2c.o
>>   COBJS-$(CONFIG_THOR_FUNCTION) += thor.o
>> +COBJS-$(CONFIG_CMD_USB_MASS_STORAGE) += ums.o
>>
>>   SRCS    := $(COBJS-y:.o=.c)
>>   OBJS	:= $(addprefix $(obj),$(COBJS-y))
>> diff --git a/board/samsung/common/ums.c b/board/samsung/common/ums.c
>> new file mode 100644
>> index 0000000..506f4b5
>> --- /dev/null
>> +++ b/board/samsung/common/ums.c
>> @@ -0,0 +1,66 @@
>> +/*
>> + * Copyright (C) 2013 Samsung Electronics
>> + * Lukasz Majewski <l.majewski at samsung.com>
>> + *
>> + * SPDX-License-Identifier:	GPL-2.0+
>> + */
>> +
>> +#include <common.h>
>> +#include <usb_mass_storage.h>
>> +#include <part.h>
>> +
>> +static int ums_read_sector(struct ums_device *ums_dev,
>> +			   ulong start, lbaint_t blkcnt, void *buf)
>> +{
>> +	if (ums_dev->mmc->block_dev.block_read(ums_dev->dev_num,
>> +					       start + ums_dev->offset, blkcnt,
>> +					       buf) != blkcnt)
>
> This looks like hell.
>
> typeT block_dev = ums_dev->mmc;
> int ret;
>
> ret = block_dev->block_read(....);
>
> return ret;

Ok, you're right - I will fix it in next patch set.

>
> Is it necessary to return -1? Why ?
>

It's only because of ums gadged driver design but it is easy to simplify.

> Please fix the whole thing in-place first, then rebase this migration patch on
> top of the fix.
>

OK, migration patch will be at the top.

And one more. Do you want me to make it applicable to usb-next or 
usb-master tree?

Thank you for comments.
-- 
Przemyslaw Marczak
Samsung R&D Institute Poland
Samsung Electronics
p.marczak at samsung.com