From: P J P <ppandit@redhat.com>
To: Qemu Developers <qemu-devel@nongnu.org>
Cc: Alistair Francis <alistair23@gmail.com>,
Peter Maydell <peter.maydell@linaro.org>,
Wjjzhang <wjjzhang@tencent.com>, Jiang Xin <jiangxin1@huawei.com>,
Prasad J Pandit <pjp@fedoraproject.org>
Subject: [Qemu-devel] [PATCH v3 0/4] sd: sdhci: correct transfer mode register usage
Date: Sat, 11 Feb 2017 20:36:57 +0530 [thread overview]
Message-ID: <20170211150701.23391-1-ppandit@redhat.com> (raw)
From: Prasad J Pandit <pjp@fedoraproject.org>
Hello,
In SDHCI protocol, the 'Block Count Enable' bit of the Transfer Mode
register is used to control 's->blkcnt' value. This bit is not relevant
in single block transfers. Also, Transfer Mode register value could be
set such that 's->blkcnt' would not see an update during multi block
transfers. Thus leading to an infinite loop.
This patch set attempts to correct 'Block Count Enable' bit usage.
This series incorporates changes suggested in patch set v2:
-> https://lists.gnu.org/archive/html/qemu-devel/2017-02/msg01608.html
Thank you.
--
Prasad J Pandit (4):
sd: sdhci: check transfer mode register in multi block transfer
sd: sdhci: mask transfer mode register value
sd: sdhci: conditionally invoke multi block transfer
sd: sdhci: Remove block count enable check in single block transfers
hw/sd/sdhci.c | 24 ++++++++++++------------
1 file changed, 12 insertions(+), 12 deletions(-)
--
2.9.3
next reply other threads:[~2017-02-11 15:07 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-11 15:06 P J P [this message]
2017-02-11 15:06 ` [Qemu-devel] [PATCH v3 1/4] sd: sdhci: check transfer mode register in multi block transfer P J P
2017-02-13 19:55 ` Alistair Francis
2017-02-11 15:06 ` [Qemu-devel] [PATCH v3 2/4] sd: sdhci: mask transfer mode register value P J P
2017-02-13 19:52 ` Alistair Francis
2017-02-14 6:23 ` P J P
2017-02-11 15:07 ` [Qemu-devel] [PATCH v3 3/4] sd: sdhci: conditionally invoke multi block transfer P J P
2017-02-13 19:55 ` Alistair Francis
2017-02-11 15:07 ` [Qemu-devel] [PATCH v3 4/4] sd: sdhci: Remove block count enable check in single block transfers P J P
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