LKML Archive on lore.kernel.org
 help / color / Atom feed
From: Scott Branden <scott.branden@broadcom.com>
To: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Luis Chamberlain <mcgrof@kernel.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	David Brown <david.brown@linaro.org>,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	Shuah Khan <shuah@kernel.org>,
	bjorn.andersson@linaro.org,
	Shuah Khan <skhan@linuxfoundation.org>,
	Arnd Bergmann <arnd@arndb.de>,
	"Rafael J . Wysocki" <rafael@kernel.org>,
	linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
	linux-fsdevel@vger.kernel.org,
	BCM Kernel Feedback <bcm-kernel-feedback-list@broadcom.com>,
	Olof Johansson <olof@lixom.net>,
	Andrew Morton <akpm@linux-foundation.org>,
	Colin Ian King <colin.king@canonical.com>,
	Kees Cook <keescook@chromium.org>, Takashi Iwai <tiwai@suse.de>,
	linux-kselftest@vger.kernel.org, Andy Gross <agross@kernel.org>
Subject: Re: [PATCH v2 3/7] test_firmware: add partial read support for request_firmware_into_buf
Date: Fri, 21 Feb 2020 17:13:08 -0800
Message-ID: <4a666590-461d-17f9-5580-31a41869383f@broadcom.com> (raw)
In-Reply-To: <9afab7f8-1b5f-a7bb-6b76-f7b19efb2979@broadcom.com>

Reponses inline.

Luis - please have a look as well.

On 2020-02-21 10:30 a.m., Scott Branden wrote:
> Hi Dan,
>
> Thanks for your review and valuable comments.
> Will have to investigate fully and correct anything wrong.
>
> On 2020-02-20 12:42 a.m., Dan Carpenter wrote:
>> On Wed, Feb 19, 2020 at 04:48:21PM -0800, Scott Branden wrote:
>>> +static int test_dev_config_update_size_t(const char *buf,
>>> +                     size_t size,
>>> +                     size_t *cfg)
>>> +{
>>> +    int ret;
>>> +    long new;
>>> +
>>> +    ret = kstrtol(buf, 10, &new);
>>> +    if (ret)
>>> +        return ret;
>>> +
>>> +    if (new > SIZE_MAX)
>> This "new" variable is long and SIZE_MAX is ULONG_MAX so the condition
>> can't be true.
Removed the check.
>>
>>> +        return -EINVAL;
>>> +
>>> +    mutex_lock(&test_fw_mutex);
>>> +    *(size_t *)cfg = new;
>>> +    mutex_unlock(&test_fw_mutex);
>>> +
>>> +    /* Always return full write size even if we didn't consume all */
>>> +    return size;
>>> +}
>>> +
>>> +static ssize_t test_dev_config_show_size_t(char *buf, int cfg)
>>> +{
>>> +    size_t val;
>>> +
>>> +    mutex_lock(&test_fw_mutex);
>>> +    val = cfg;
>>> +    mutex_unlock(&test_fw_mutex);
>> Both val and cfg are stack variables so there is no need for locking.
>> Probably you meant to pass a pointer to cfg?
I am following the existing code as was done for
test_dev_config_show_bool(),
test_dev_config_show_int(),
test_dev_config_show_u8()

Mutex probably not needed but I don't think I need to deviate from the 
rest of the test code.

Luis, could you please explain what the rest of your code is doing?
>>
>>> +
>>> +    return snprintf(buf, PAGE_SIZE, "%zu\n", val);
>>> +}
>>> +
>>>   static ssize_t test_dev_config_show_int(char *buf, int cfg)
>>>   {
>>>       int val;
>> regards,
>> dan carpenter
>>
>>
>


  reply index

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-20  0:48 [PATCH v2 0/7] firmware: add partial read support in request_firmware_into_buf Scott Branden
2020-02-20  0:48 ` [PATCH v2 1/7] fs: introduce kernel_pread_file* support Scott Branden
2020-02-20  0:48 ` [PATCH v2 2/7] firmware: add offset to request_firmware_into_buf Scott Branden
2020-02-20  1:22   ` Luis Chamberlain
2020-02-21  0:14     ` Scott Branden
2020-02-20  0:48 ` [PATCH v2 3/7] test_firmware: add partial read support for request_firmware_into_buf Scott Branden
2020-02-20  8:42   ` Dan Carpenter
2020-02-21 18:30     ` Scott Branden
2020-02-22  1:13       ` Scott Branden [this message]
2020-02-24  8:08         ` Dan Carpenter
2020-02-25 19:11         ` Luis Chamberlain
2020-02-20  0:48 ` [PATCH v2 4/7] firmware: test partial file reads of request_firmware_into_buf Scott Branden
2020-02-20  0:48 ` [PATCH v2 5/7] bcm-vk: add bcm_vk UAPI Scott Branden
2020-02-20  7:50   ` Greg Kroah-Hartman
2020-02-21  1:15     ` Scott Branden
2020-02-21  8:34       ` Arnd Bergmann
2020-02-21 18:27         ` Scott Branden
2020-02-21  9:22       ` Greg Kroah-Hartman
2020-02-20  0:48 ` [PATCH v2 6/7] misc: bcm-vk: add Broadcom VK driver Scott Branden
2020-02-20  1:04   ` Randy Dunlap
2020-02-21  0:06     ` Scott Branden
2020-02-21  0:21       ` Randy Dunlap
2020-02-20  7:47   ` Greg Kroah-Hartman
2020-02-21 18:19     ` Scott Branden
2020-02-22  8:02       ` Arnd Bergmann
2020-02-23 10:00         ` Greg Kroah-Hartman
2020-02-23 23:55         ` Olof Johansson
2020-02-25 22:37           ` Scott Branden
2020-02-20 10:43   ` Dan Carpenter
2020-02-21 18:29     ` Scott Branden
2020-04-17 21:49     ` Scott Branden
2020-04-18 11:45       ` Dan Carpenter
2020-04-18 11:47         ` Dan Carpenter
2020-04-18 17:25           ` Scott Branden
2020-02-22 16:44   ` kbuild test robot
2020-02-22 16:44   ` [RFC PATCH] misc: bcm-vk: image_tab[] can be static kbuild test robot
2020-02-20  0:48 ` [PATCH v2 7/7] MAINTAINERS: bcm-vk: add maintainer for Broadcom VK Driver Scott Branden

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=4a666590-461d-17f9-5580-31a41869383f@broadcom.com \
    --to=scott.branden@broadcom.com \
    --cc=agross@kernel.org \
    --cc=akpm@linux-foundation.org \
    --cc=arnd@arndb.de \
    --cc=bcm-kernel-feedback-list@broadcom.com \
    --cc=bjorn.andersson@linaro.org \
    --cc=colin.king@canonical.com \
    --cc=dan.carpenter@oracle.com \
    --cc=david.brown@linaro.org \
    --cc=gregkh@linuxfoundation.org \
    --cc=keescook@chromium.org \
    --cc=linux-arm-msm@vger.kernel.org \
    --cc=linux-fsdevel@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-kselftest@vger.kernel.org \
    --cc=mcgrof@kernel.org \
    --cc=olof@lixom.net \
    --cc=rafael@kernel.org \
    --cc=shuah@kernel.org \
    --cc=skhan@linuxfoundation.org \
    --cc=tiwai@suse.de \
    --cc=viro@zeniv.linux.org.uk \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

LKML Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/lkml/0 lkml/git/0.git
	git clone --mirror https://lore.kernel.org/lkml/1 lkml/git/1.git
	git clone --mirror https://lore.kernel.org/lkml/2 lkml/git/2.git
	git clone --mirror https://lore.kernel.org/lkml/3 lkml/git/3.git
	git clone --mirror https://lore.kernel.org/lkml/4 lkml/git/4.git
	git clone --mirror https://lore.kernel.org/lkml/5 lkml/git/5.git
	git clone --mirror https://lore.kernel.org/lkml/6 lkml/git/6.git
	git clone --mirror https://lore.kernel.org/lkml/7 lkml/git/7.git
	git clone --mirror https://lore.kernel.org/lkml/8 lkml/git/8.git
	git clone --mirror https://lore.kernel.org/lkml/9 lkml/git/9.git
	git clone --mirror https://lore.kernel.org/lkml/10 lkml/git/10.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 lkml lkml/ https://lore.kernel.org/lkml \
		linux-kernel@vger.kernel.org
	public-inbox-index lkml

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-kernel


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git