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Re: [PATCH] drivers: stm: correct the index in master array release

From Alexander Shishkin <alexander.shishkin@linux.intel.com>
Newsgroups linux.kernel
Subject Re: [PATCH] drivers: stm: correct the index in master array release
Date 2016-02-09 11:20 +0100
Message-ID <r0dyP-2DB-29@gated-at.bofh.it> (permalink)
References <qVMnx-6eG-17@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Chunyan Zhang <zhang.chunyan@linaro.org> writes:

> It would be broken if stm_data->sw_start isn't zero, because that
> stp_master_free() get the 'master' with __stm_master()/stm_master(),
> in which the masterID is the second input parameter minus
> stm_data->sw_start. So freeing STM masters has to start from
> stm_data->sw_start.

No, it won't. stm_master_free() handles nonexistent masters correctly.
It does make sense to shrink the loop in stm_unregister_device() to
avoid going through the [0..sw_start) range, since stm_master() returns
NULL for those, but not for the reasons given in this patch description.

Regards,
--
Alex

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Thread

[PATCH] drivers: stm: correct the index in master array release Chunyan Zhang <zhang.chunyan@linaro.org> - 2016-01-28 05:30 +0100
  Re: [PATCH] drivers: stm: correct the index in master array release Alexander Shishkin <alexander.shishkin@linux.intel.com> - 2016-02-09 11:20 +0100
    Re: [PATCH] drivers: stm: correct the index in master array release Chunyan Zhang <zhang.chunyan@linaro.org> - 2016-02-14 07:30 +0100
      Re: [PATCH] drivers: stm: correct the index in master array release Alexander Shishkin <alexander.shishkin@linux.intel.com> - 2016-02-15 11:40 +0100

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