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scsi: esas2r: Use FIELD_GET() to extract PCIe capability fields

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Use FIELD_GET() to extract PCIe capability register fields instead of
custom masking and shifting. Also remove the unnecessary cast to u8, the
value in those fields always fits to u8.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20230913122748.29530-8-ilpo.jarvinen@linux.intel.com
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Ilpo Järvinen 2023-09-13 15:27:45 +03:00 committed by Martin K. Petersen
parent ccc3e13630
commit 5532f24951
1 changed files with 6 additions and 10 deletions
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16
drivers/scsi/esas2r/esas2r_ioctl.c
View file

@ -41,6 +41,8 @@
* USA.
*/
#include <linux/bitfield.h>
#include "esas2r.h"
/*
@ -792,16 +794,10 @@ static int hba_ioctl_callback(struct esas2r_adapter *a,
pcie_capability_read_dword(a->pcid, PCI_EXP_LNKCAP,
&caps);
gai->pci.link_speed_curr =
(u8)(stat & PCI_EXP_LNKSTA_CLS);
gai->pci.link_speed_max =
(u8)(caps & PCI_EXP_LNKCAP_SLS);
gai->pci.link_width_curr =
(u8)((stat & PCI_EXP_LNKSTA_NLW)
>> PCI_EXP_LNKSTA_NLW_SHIFT);
gai->pci.link_width_max =
(u8)((caps & PCI_EXP_LNKCAP_MLW)
>> 4);
gai->pci.link_speed_curr = FIELD_GET(PCI_EXP_LNKSTA_CLS, stat);
gai->pci.link_speed_max = FIELD_GET(PCI_EXP_LNKCAP_SLS, caps);
gai->pci.link_width_curr = FIELD_GET(PCI_EXP_LNKSTA_NLW, stat);
gai->pci.link_width_max = FIELD_GET(PCI_EXP_LNKCAP_MLW, caps);
}
gai->pci.msi_vector_cnt = 1;