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[1/2] PCI: controller: thunder: fix compile testing

Message ID 20210225143727.3912204-1-arnd@kernel.org
State New
Headers show
Series [1/2] PCI: controller: thunder: fix compile testing | expand

Commit Message

Arnd Bergmann Feb. 25, 2021, 2:37 p.m. UTC
From: Arnd Bergmann <arnd@arndb.de>

Compile-testing these drivers is currently broken. Enabling
it causes a couple of build failures though:

drivers/pci/controller/pci-thunder-ecam.c:119:30: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
drivers/pci/controller/pci-thunder-pem.c:54:2: error: implicit declaration of function 'writeq' [-Werror,-Wimplicit-function-declaration]
drivers/pci/controller/pci-thunder-pem.c:392:8: error: implicit declaration of function 'acpi_get_rc_resources' [-Werror,-Wimplicit-function-declaration]

Fix them with the obvious one-line changes.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/pci/controller/pci-thunder-ecam.c |  2 +-
 drivers/pci/controller/pci-thunder-pem.c  | 13 +++++++------
 drivers/pci/pci.h                         |  6 ++++++
 3 files changed, 14 insertions(+), 7 deletions(-)

Comments

Kuppuswamy, Sathyanarayanan Feb. 25, 2021, 5:44 p.m. UTC | #1
On 2/25/21 6:37 AM, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
> 
> Compile-testing these drivers is currently broken. Enabling
> it causes a couple of build failures though:
> 
> drivers/pci/controller/pci-thunder-ecam.c:119:30: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
> drivers/pci/controller/pci-thunder-pem.c:54:2: error: implicit declaration of function 'writeq' [-Werror,-Wimplicit-function-declaration]
> drivers/pci/controller/pci-thunder-pem.c:392:8: error: implicit declaration of function 'acpi_get_rc_resources' [-Werror,-Wimplicit-function-declaration]
> 
> Fix them with the obvious one-line changes.
Looks good to me.
> 
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
>   drivers/pci/controller/pci-thunder-ecam.c |  2 +-
>   drivers/pci/controller/pci-thunder-pem.c  | 13 +++++++------
>   drivers/pci/pci.h                         |  6 ++++++
>   3 files changed, 14 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/pci/controller/pci-thunder-ecam.c b/drivers/pci/controller/pci-thunder-ecam.c
> index f964fd26f7e0..ffd84656544f 100644
> --- a/drivers/pci/controller/pci-thunder-ecam.c
> +++ b/drivers/pci/controller/pci-thunder-ecam.c
> @@ -116,7 +116,7 @@ static int thunder_ecam_p2_config_read(struct pci_bus *bus, unsigned int devfn,
>   	 * the config space access window.  Since we are working with
>   	 * the high-order 32 bits, shift everything down by 32 bits.
>   	 */
> -	node_bits = (cfg->res.start >> 32) & (1 << 12);
> +	node_bits = upper_32_bits(cfg->res.start) & (1 << 12);
>   
>   	v |= node_bits;
>   	set_val(v, where, size, val);
> diff --git a/drivers/pci/controller/pci-thunder-pem.c b/drivers/pci/controller/pci-thunder-pem.c
> index 1a3f70ac61fc..0660b9da204f 100644
> --- a/drivers/pci/controller/pci-thunder-pem.c
> +++ b/drivers/pci/controller/pci-thunder-pem.c
> @@ -12,6 +12,7 @@
>   #include <linux/pci-acpi.h>
>   #include <linux/pci-ecam.h>
>   #include <linux/platform_device.h>
> +#include <linux/io-64-nonatomic-lo-hi.h>
>   #include "../pci.h"
>   
>   #if defined(CONFIG_PCI_HOST_THUNDER_PEM) || (defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS))
> @@ -324,9 +325,9 @@ static int thunder_pem_init(struct device *dev, struct pci_config_window *cfg,
>   	 * structure here for the BAR.
>   	 */
>   	bar4_start = res_pem->start + 0xf00000;
> -	pem_pci->ea_entry[0] = (u32)bar4_start | 2;
> -	pem_pci->ea_entry[1] = (u32)(res_pem->end - bar4_start) & ~3u;
> -	pem_pci->ea_entry[2] = (u32)(bar4_start >> 32);
> +	pem_pci->ea_entry[0] = lower_32_bits(bar4_start) | 2;
> +	pem_pci->ea_entry[1] = lower_32_bits(res_pem->end - bar4_start) & ~3u;
> +	pem_pci->ea_entry[2] = upper_32_bits(bar4_start);
>   
>   	cfg->priv = pem_pci;
>   	return 0;
> @@ -334,9 +335,9 @@ static int thunder_pem_init(struct device *dev, struct pci_config_window *cfg,
>   
>   #if defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS)
>   
> -#define PEM_RES_BASE		0x87e0c0000000UL
> -#define PEM_NODE_MASK		GENMASK(45, 44)
> -#define PEM_INDX_MASK		GENMASK(26, 24)
> +#define PEM_RES_BASE		0x87e0c0000000ULL
> +#define PEM_NODE_MASK		GENMASK_ULL(45, 44)
> +#define PEM_INDX_MASK		GENMASK_ULL(26, 24)
>   #define PEM_MIN_DOM_IN_NODE	4
>   #define PEM_MAX_DOM_IN_NODE	10
>   
> diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
> index 0a2b6d993fe1..022c2f433676 100644
> --- a/drivers/pci/pci.h
> +++ b/drivers/pci/pci.h
> @@ -625,6 +625,12 @@ static inline int pci_dev_specific_reset(struct pci_dev *dev, int probe)
>   #if defined(CONFIG_PCI_QUIRKS) && defined(CONFIG_ARM64)
>   int acpi_get_rc_resources(struct device *dev, const char *hid, u16 segment,
>   			  struct resource *res);
> +#else
> +static inline int acpi_get_rc_resources(struct device *dev, const char *hid,
> +					u16 segment, struct resource *res)
> +{
> +	return -ENODEV;
> +}
>   #endif
>   
>   int pci_rebar_get_current_size(struct pci_dev *pdev, int bar);
>
Bjorn Helgaas Feb. 25, 2021, 6:51 p.m. UTC | #2
On Thu, Feb 25, 2021 at 09:44:12AM -0800, Kuppuswamy, Sathyanarayanan wrote:
> On 2/25/21 6:37 AM, Arnd Bergmann wrote:
> > From: Arnd Bergmann <arnd@arndb.de>
> > 
> > Compile-testing these drivers is currently broken. Enabling
> > it causes a couple of build failures though:
> > 
> > drivers/pci/controller/pci-thunder-ecam.c:119:30: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
> > drivers/pci/controller/pci-thunder-pem.c:54:2: error: implicit declaration of function 'writeq' [-Werror,-Wimplicit-function-declaration]
> > drivers/pci/controller/pci-thunder-pem.c:392:8: error: implicit declaration of function 'acpi_get_rc_resources' [-Werror,-Wimplicit-function-declaration]
> > 
> > Fix them with the obvious one-line changes.
> Looks good to me.

Thanks for looking this over!  I'd like to acknowledge your review,
but I need an explicit Reviewed-by or similar.  I don't want to put
words in your mouth by converting "Looks good to me" to "Reviewed-by".
Kuppuswamy, Sathyanarayanan Feb. 25, 2021, 7:15 p.m. UTC | #3
On 2/25/21 10:51 AM, Bjorn Helgaas wrote:
> Thanks for looking this over!  I'd like to acknowledge your review,
> but I need an explicit Reviewed-by or similar.  I don't want to put
> words in your mouth by converting "Looks good to me" to "Reviewed-by".

will do so in future reviews.

Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Robert Richter Feb. 26, 2021, 3:12 p.m. UTC | #4
On 25.02.21 15:37:09, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
> 
> Compile-testing these drivers is currently broken. Enabling
> it causes a couple of build failures though:
> 
> drivers/pci/controller/pci-thunder-ecam.c:119:30: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
> drivers/pci/controller/pci-thunder-pem.c:54:2: error: implicit declaration of function 'writeq' [-Werror,-Wimplicit-function-declaration]
> drivers/pci/controller/pci-thunder-pem.c:392:8: error: implicit declaration of function 'acpi_get_rc_resources' [-Werror,-Wimplicit-function-declaration]
> 
> Fix them with the obvious one-line changes.
> 
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Reviewed-by: Robert Richter <rric@kernel.org>

> ---
>  drivers/pci/controller/pci-thunder-ecam.c |  2 +-
>  drivers/pci/controller/pci-thunder-pem.c  | 13 +++++++------
>  drivers/pci/pci.h                         |  6 ++++++
>  3 files changed, 14 insertions(+), 7 deletions(-)
diff mbox series

Patch

diff --git a/drivers/pci/controller/pci-thunder-ecam.c b/drivers/pci/controller/pci-thunder-ecam.c
index f964fd26f7e0..ffd84656544f 100644
--- a/drivers/pci/controller/pci-thunder-ecam.c
+++ b/drivers/pci/controller/pci-thunder-ecam.c
@@ -116,7 +116,7 @@  static int thunder_ecam_p2_config_read(struct pci_bus *bus, unsigned int devfn,
 	 * the config space access window.  Since we are working with
 	 * the high-order 32 bits, shift everything down by 32 bits.
 	 */
-	node_bits = (cfg->res.start >> 32) & (1 << 12);
+	node_bits = upper_32_bits(cfg->res.start) & (1 << 12);
 
 	v |= node_bits;
 	set_val(v, where, size, val);
diff --git a/drivers/pci/controller/pci-thunder-pem.c b/drivers/pci/controller/pci-thunder-pem.c
index 1a3f70ac61fc..0660b9da204f 100644
--- a/drivers/pci/controller/pci-thunder-pem.c
+++ b/drivers/pci/controller/pci-thunder-pem.c
@@ -12,6 +12,7 @@ 
 #include <linux/pci-acpi.h>
 #include <linux/pci-ecam.h>
 #include <linux/platform_device.h>
+#include <linux/io-64-nonatomic-lo-hi.h>
 #include "../pci.h"
 
 #if defined(CONFIG_PCI_HOST_THUNDER_PEM) || (defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS))
@@ -324,9 +325,9 @@  static int thunder_pem_init(struct device *dev, struct pci_config_window *cfg,
 	 * structure here for the BAR.
 	 */
 	bar4_start = res_pem->start + 0xf00000;
-	pem_pci->ea_entry[0] = (u32)bar4_start | 2;
-	pem_pci->ea_entry[1] = (u32)(res_pem->end - bar4_start) & ~3u;
-	pem_pci->ea_entry[2] = (u32)(bar4_start >> 32);
+	pem_pci->ea_entry[0] = lower_32_bits(bar4_start) | 2;
+	pem_pci->ea_entry[1] = lower_32_bits(res_pem->end - bar4_start) & ~3u;
+	pem_pci->ea_entry[2] = upper_32_bits(bar4_start);
 
 	cfg->priv = pem_pci;
 	return 0;
@@ -334,9 +335,9 @@  static int thunder_pem_init(struct device *dev, struct pci_config_window *cfg,
 
 #if defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS)
 
-#define PEM_RES_BASE		0x87e0c0000000UL
-#define PEM_NODE_MASK		GENMASK(45, 44)
-#define PEM_INDX_MASK		GENMASK(26, 24)
+#define PEM_RES_BASE		0x87e0c0000000ULL
+#define PEM_NODE_MASK		GENMASK_ULL(45, 44)
+#define PEM_INDX_MASK		GENMASK_ULL(26, 24)
 #define PEM_MIN_DOM_IN_NODE	4
 #define PEM_MAX_DOM_IN_NODE	10
 
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 0a2b6d993fe1..022c2f433676 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -625,6 +625,12 @@  static inline int pci_dev_specific_reset(struct pci_dev *dev, int probe)
 #if defined(CONFIG_PCI_QUIRKS) && defined(CONFIG_ARM64)
 int acpi_get_rc_resources(struct device *dev, const char *hid, u16 segment,
 			  struct resource *res);
+#else
+static inline int acpi_get_rc_resources(struct device *dev, const char *hid,
+					u16 segment, struct resource *res)
+{
+	return -ENODEV;
+}
 #endif
 
 int pci_rebar_get_current_size(struct pci_dev *pdev, int bar);