From: Dan Carpenter <dan.carpenter@oracle.com>
To: "James E.J. Bottomley" <JBottomley@odin.com>,
"Matthew R. Ochs" <mrochs@linux.vnet.ibm.com>
Cc: "Manoj N. Kumar" <manoj@linux.vnet.ibm.com>,
Brian King <brking@linux.vnet.ibm.com>,
Michael Neuling <mikey@neuling.org>,
linux-scsi@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [patch] cxlflash: shift wrapping bug in afu_link_reset()
Date: Tue, 18 Aug 2015 11:57:43 +0300 [thread overview]
Message-ID: <20150818085743.GA3965@mwanda> (raw)
"port_sel" is a u64 so the shifting should also be a 64 bit shift.
Fixes: c21e0bbfc485 ('cxlflash: Base support for IBM CXL Flash Adapter')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c
index 0720d2f..f97421d 100644
--- a/drivers/scsi/cxlflash/main.c
+++ b/drivers/scsi/cxlflash/main.c
@@ -1179,7 +1179,7 @@ static void afu_link_reset(struct afu *afu, int port, u64 *fc_regs)
/* first switch the AFU to the other links, if any */
port_sel = readq_be(&afu->afu_map->global.regs.afu_port_sel);
- port_sel &= ~(1 << port);
+ port_sel &= ~(1ULL << port);
writeq_be(port_sel, &afu->afu_map->global.regs.afu_port_sel);
cxlflash_afu_sync(afu, 0, 0, AFU_GSYNC);
@@ -1196,7 +1196,7 @@ static void afu_link_reset(struct afu *afu, int port, u64 *fc_regs)
__func__, port);
/* switch back to include this port */
- port_sel |= (1 << port);
+ port_sel |= (1ULL << port);
writeq_be(port_sel, &afu->afu_map->global.regs.afu_port_sel);
cxlflash_afu_sync(afu, 0, 0, AFU_GSYNC);
next reply other threads:[~2015-08-18 8:58 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-18 8:57 Dan Carpenter [this message]
2015-08-18 9:58 ` [patch] cxlflash: shift wrapping bug in afu_link_reset() Johannes Thumshirn
2015-08-18 15:11 ` Matthew R. Ochs
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=20150818085743.GA3965@mwanda \
--to=dan.carpenter@oracle.com \
--cc=JBottomley@odin.com \
--cc=brking@linux.vnet.ibm.com \
--cc=kernel-janitors@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
--cc=manoj@linux.vnet.ibm.com \
--cc=mikey@neuling.org \
--cc=mrochs@linux.vnet.ibm.com \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox