From: julia.lawall@lip6.fr (Julia Lawall)
To: cocci@systeme.lip6.fr
Subject: [Cocci] coccinelle and bitmask arithmetic (was: Re: [patch] TTY: synclink, small cleanup in dtr_rts())
Date: Tue, 29 Jan 2013 18:49:02 +0100 (CET) [thread overview]
Message-ID: <alpine.DEB.2.02.1301291847070.3339@hadrien> (raw)
In-Reply-To: <1359475998.4196.26.camel@joe-AO722>
How about the following (from today's linux-next). They appear to be
trying to do the same calculation, once with + and once with |.
arch/arm/common/it8152.c
int dma_set_coherent_mask(struct device *dev, u64 mask)
{
if (mask >= PHYS_OFFSET + SZ_64M - 1)
return 0;
return -EIO;
}
static int it8152_pci_platform_notify(struct device *dev)
{
if (dev->bus == &pci_bus_type) {
if (dev->dma_mask)
*dev->dma_mask = (SZ_64M - 1) | PHYS_OFFSET;
dev->coherent_dma_mask = (SZ_64M - 1) | PHYS_OFFSET;
dmabounce_register_dev(dev, 2048, 4096, it8152_needs_bounce);
}
return 0;
}
julia
WARNING: multiple messages have this Message-ID (diff)
From: Julia Lawall <julia.lawall@lip6.fr>
To: cocci@systeme.lip6.fr
Subject: Re: coccinelle and bitmask arithmetic (was: Re: [patch] TTY: synclink, small cleanup in dtr_rts())
Date: Tue, 29 Jan 2013 17:49:02 +0000 [thread overview]
Message-ID: <alpine.DEB.2.02.1301291847070.3339@hadrien> (raw)
In-Reply-To: <1359475998.4196.26.camel@joe-AO722>
How about the following (from today's linux-next). They appear to be
trying to do the same calculation, once with + and once with |.
arch/arm/common/it8152.c
int dma_set_coherent_mask(struct device *dev, u64 mask)
{
if (mask >= PHYS_OFFSET + SZ_64M - 1)
return 0;
return -EIO;
}
static int it8152_pci_platform_notify(struct device *dev)
{
if (dev->bus = &pci_bus_type) {
if (dev->dma_mask)
*dev->dma_mask = (SZ_64M - 1) | PHYS_OFFSET;
dev->coherent_dma_mask = (SZ_64M - 1) | PHYS_OFFSET;
dmabounce_register_dev(dev, 2048, 4096, it8152_needs_bounce);
}
return 0;
}
julia
WARNING: multiple messages have this Message-ID (diff)
From: Julia Lawall <julia.lawall@lip6.fr>
To: Joe Perches <joe@perches.com>
Cc: Valdis.Kletnieks@vt.edu, cocci@systeme.lip6.fr,
Julia Lawall <julia.lawall@lip6.fr>,
Dan Carpenter <dan.carpenter@oracle.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jslaby@suse.cz>, Paul Fulghum <paulkf@microgate.com>,
David Howells <dhowells@redhat.com>,
linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: Re: coccinelle and bitmask arithmetic (was: Re: [patch] TTY: synclink, small cleanup in dtr_rts())
Date: Tue, 29 Jan 2013 18:49:02 +0100 (CET) [thread overview]
Message-ID: <alpine.DEB.2.02.1301291847070.3339@hadrien> (raw)
In-Reply-To: <1359475998.4196.26.camel@joe-AO722>
How about the following (from today's linux-next). They appear to be
trying to do the same calculation, once with + and once with |.
arch/arm/common/it8152.c
int dma_set_coherent_mask(struct device *dev, u64 mask)
{
if (mask >= PHYS_OFFSET + SZ_64M - 1)
return 0;
return -EIO;
}
static int it8152_pci_platform_notify(struct device *dev)
{
if (dev->bus == &pci_bus_type) {
if (dev->dma_mask)
*dev->dma_mask = (SZ_64M - 1) | PHYS_OFFSET;
dev->coherent_dma_mask = (SZ_64M - 1) | PHYS_OFFSET;
dmabounce_register_dev(dev, 2048, 4096, it8152_needs_bounce);
}
return 0;
}
julia
next prev parent reply other threads:[~2013-01-29 17:49 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-27 19:40 [patch] TTY: synclink, small cleanup in dtr_rts() Dan Carpenter
2013-01-27 19:40 ` Dan Carpenter
2013-01-27 20:04 ` Joe Perches
2013-01-27 20:04 ` Joe Perches
2013-01-27 20:16 ` Jiri Slaby
2013-01-27 20:16 ` Jiri Slaby
2013-01-27 20:19 ` Dan Carpenter
2013-01-27 20:19 ` Dan Carpenter
2013-01-27 21:00 ` Joe Perches
2013-01-27 21:00 ` Joe Perches
[not found] ` <C8AFB2C4-4974-4265-A41C-A56C71784F39@microgate.com>
2013-01-28 2:21 ` [PATCH] TTY: synclink: Convert + to | for bit operations Joe Perches
2013-01-28 2:21 ` Joe Perches
2013-01-28 12:06 ` [patch] TTY: synclink, small cleanup in dtr_rts() walter harms
2013-01-28 12:06 ` walter harms
2013-01-29 15:55 ` Valdis.Kletnieks
2013-01-29 15:55 ` Valdis.Kletnieks
2013-01-29 16:13 ` [Cocci] coccinelle and bitmask arithmetic (was: Re: [patch] TTY: synclink, small cleanup in dtr_rts()) Joe Perches
2013-01-29 16:13 ` Joe Perches
2013-01-29 16:13 ` Joe Perches
2013-01-29 16:19 ` [Cocci] " Julia Lawall
2013-01-29 16:19 ` Julia Lawall
2013-01-29 16:19 ` Julia Lawall
2013-01-29 16:31 ` [Cocci] " Joe Perches
2013-01-29 16:31 ` Joe Perches
2013-01-29 16:31 ` Joe Perches
2013-01-29 17:30 ` [Cocci] " Dan Carpenter
2013-01-29 17:30 ` Dan Carpenter
2013-01-29 17:42 ` [Cocci] " Dan Carpenter
2013-01-29 17:42 ` Dan Carpenter
2013-01-29 17:42 ` Dan Carpenter
2013-01-29 17:49 ` Julia Lawall [this message]
2013-01-29 17:49 ` Julia Lawall
2013-01-29 17:49 ` Julia Lawall
2013-01-29 18:03 ` [Cocci] " Joe Perches
2013-01-29 18:03 ` Joe Perches
2013-01-29 18:03 ` Joe Perches
2013-01-30 8:21 ` [Cocci] coccinelle and bitmask arithmetic walter harms
2013-01-30 8:21 ` walter harms
2013-01-30 8:21 ` walter harms
2013-01-30 8:29 ` [Cocci] " Joe Perches
2013-01-30 8:29 ` Joe Perches
2013-01-30 8:29 ` Joe Perches
2013-01-30 11:14 ` [Cocci] " Russell King - ARM Linux
2013-01-30 11:14 ` Russell King - ARM Linux
2013-01-30 11:14 ` Russell King - ARM Linux
2013-01-30 11:21 ` [Cocci] " Julia Lawall
2013-01-30 11:21 ` Julia Lawall
2013-01-30 11:21 ` Julia Lawall
2013-01-30 11:35 ` [Cocci] " Russell King - ARM Linux
2013-01-30 11:35 ` Russell King - ARM Linux
2013-01-30 11:35 ` Russell King - ARM Linux
2013-01-30 16:53 ` [Cocci] " Joe Perches
2013-01-30 16:53 ` Joe Perches
2013-01-30 16:53 ` Joe Perches
2013-01-30 18:23 ` [Cocci] " Russell King - ARM Linux
2013-01-30 18:23 ` Russell King - ARM Linux
2013-01-30 18:23 ` Russell King - ARM Linux
2013-01-29 18:38 ` [Cocci] coccinelle and bitmask arithmetic (was: Re: [patch] TTY: synclink, small cleanup in dtr_rts()) Julia Lawall
2013-01-29 18:38 ` Julia Lawall
2013-01-29 18:38 ` Julia Lawall
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