[PATCH] scsi: lpfc: use div_u64 for 64-bit division

From: Arnd Bergmann
Date: Mon Feb 27 2017 - 18:17:12 EST

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The new debugfs output causes a link error on 32-bit architectures:

ERROR: "__aeabi_uldivmod" [drivers/scsi/lpfc/lpfc.ko] undefined!

This code is not performance critical, so we can simply use div_u64().

Fixes: bd2cdd5e400f ("scsi: lpfc: NVME Initiator: Add debugfs support")
Fixes: 2b65e18202fd ("scsi: lpfc: NVME Target: Add debugfs support")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
drivers/scsi/lpfc/lpfc_debugfs.c | 64 ++++++++++++++++++++--------------------
1 file changed, 32 insertions(+), 32 deletions(-)

diff --git a/drivers/scsi/lpfc/lpfc_debugfs.c b/drivers/scsi/lpfc/lpfc_debugfs.c
index 599fde4ea8b1..47c67bf0514e 100644
--- a/drivers/scsi/lpfc/lpfc_debugfs.c
+++ b/drivers/scsi/lpfc/lpfc_debugfs.c
@@ -873,8 +873,8 @@ lpfc_debugfs_nvmektime_data(struct lpfc_vport *vport, char *buf, int size)
len += snprintf(
buf + len, PAGE_SIZE - len,
"avg:%08lld min:%08lld max %08lld\n",
- phba->ktime_seg1_total /
- phba->ktime_data_samples,
+ div_u64(phba->ktime_seg1_total,
+ phba->ktime_data_samples),
phba->ktime_seg1_min,
phba->ktime_seg1_max);
len += snprintf(
@@ -884,8 +884,8 @@ lpfc_debugfs_nvmektime_data(struct lpfc_vport *vport, char *buf, int size)
len += snprintf(
buf + len, PAGE_SIZE - len,
"avg:%08lld min:%08lld max %08lld\n",
- phba->ktime_seg2_total /
- phba->ktime_data_samples,
+ div_u64(phba->ktime_seg2_total,
+ phba->ktime_data_samples),
phba->ktime_seg2_min,
phba->ktime_seg2_max);
len += snprintf(
@@ -895,8 +895,8 @@ lpfc_debugfs_nvmektime_data(struct lpfc_vport *vport, char *buf, int size)
len += snprintf(
buf + len, PAGE_SIZE - len,
"avg:%08lld min:%08lld max %08lld\n",
- phba->ktime_seg3_total /
- phba->ktime_data_samples,
+ div_u64(phba->ktime_seg3_total,
+ phba->ktime_data_samples),
phba->ktime_seg3_min,
phba->ktime_seg3_max);
len += snprintf(
@@ -906,17 +906,17 @@ lpfc_debugfs_nvmektime_data(struct lpfc_vport *vport, char *buf, int size)
len += snprintf(
buf + len, PAGE_SIZE - len,
"avg:%08lld min:%08lld max %08lld\n",
- phba->ktime_seg4_total /
- phba->ktime_data_samples,
+ div_u64(phba->ktime_seg4_total,
+ phba->ktime_data_samples),
phba->ktime_seg4_min,
phba->ktime_seg4_max);
len += snprintf(
buf + len, PAGE_SIZE - len,
"Total IO avg time: %08lld\n",
- ((phba->ktime_seg1_total +
+ div_u64(phba->ktime_seg1_total +
phba->ktime_seg2_total +
phba->ktime_seg3_total +
- phba->ktime_seg4_total) /
+ phba->ktime_seg4_total,
phba->ktime_data_samples));
return len;
}
@@ -935,8 +935,8 @@ lpfc_debugfs_nvmektime_data(struct lpfc_vport *vport, char *buf, int size)
"cmd pass to NVME Layer\n");
len += snprintf(buf + len, PAGE_SIZE-len,
"avg:%08lld min:%08lld max %08lld\n",
- phba->ktime_seg1_total /
- phba->ktime_data_samples,
+ div_u64(phba->ktime_seg1_total,
+ phba->ktime_data_samples),
phba->ktime_seg1_min,
phba->ktime_seg1_max);
len += snprintf(buf + len, PAGE_SIZE-len,
@@ -944,8 +944,8 @@ lpfc_debugfs_nvmektime_data(struct lpfc_vport *vport, char *buf, int size)
"-to- Driver rcv cmd OP (action)\n");
len += snprintf(buf + len, PAGE_SIZE-len,
"avg:%08lld min:%08lld max %08lld\n",
- phba->ktime_seg2_total /
- phba->ktime_data_samples,
+ div_u64(phba->ktime_seg2_total,
+ phba->ktime_data_samples),
phba->ktime_seg2_min,
phba->ktime_seg2_max);
len += snprintf(buf + len, PAGE_SIZE-len,
@@ -953,8 +953,8 @@ lpfc_debugfs_nvmektime_data(struct lpfc_vport *vport, char *buf, int size)
"Firmware WQ doorbell: cmd\n");
len += snprintf(buf + len, PAGE_SIZE-len,
"avg:%08lld min:%08lld max %08lld\n",
- phba->ktime_seg3_total /
- phba->ktime_data_samples,
+ div_u64(phba->ktime_seg3_total,
+ phba->ktime_data_samples),
phba->ktime_seg3_min,
phba->ktime_seg3_max);
len += snprintf(buf + len, PAGE_SIZE-len,
@@ -962,8 +962,8 @@ lpfc_debugfs_nvmektime_data(struct lpfc_vport *vport, char *buf, int size)
"-to- MSI-X ISR for cmd cmpl\n");
len += snprintf(buf + len, PAGE_SIZE-len,
"avg:%08lld min:%08lld max %08lld\n",
- phba->ktime_seg4_total /
- phba->ktime_data_samples,
+ div_u64(phba->ktime_seg4_total,
+ phba->ktime_data_samples),
phba->ktime_seg4_min,
phba->ktime_seg4_max);
len += snprintf(buf + len, PAGE_SIZE-len,
@@ -971,8 +971,8 @@ lpfc_debugfs_nvmektime_data(struct lpfc_vport *vport, char *buf, int size)
"-to- NVME layer passed cmd done\n");
len += snprintf(buf + len, PAGE_SIZE-len,
"avg:%08lld min:%08lld max %08lld\n",
- phba->ktime_seg5_total /
- phba->ktime_data_samples,
+ div_u64(phba->ktime_seg5_total,
+ phba->ktime_data_samples),
phba->ktime_seg5_min,
phba->ktime_seg5_max);

@@ -983,8 +983,8 @@ lpfc_debugfs_nvmektime_data(struct lpfc_vport *vport, char *buf, int size)
len += snprintf(buf + len, PAGE_SIZE-len,
"avg:%08lld min:%08lld "
"max %08lld\n",
- phba->ktime_seg10_total /
- phba->ktime_data_samples,
+ div_u64(phba->ktime_seg10_total,
+ phba->ktime_data_samples),
phba->ktime_seg10_min,
phba->ktime_seg10_max);
return len;
@@ -995,8 +995,8 @@ lpfc_debugfs_nvmektime_data(struct lpfc_vport *vport, char *buf, int size)
"-to- Driver rcv rsp status OP\n");
len += snprintf(buf + len, PAGE_SIZE-len,
"avg:%08lld min:%08lld max %08lld\n",
- phba->ktime_seg6_total /
- phba->ktime_status_samples,
+ div_u64(phba->ktime_seg6_total,
+ phba->ktime_status_samples),
phba->ktime_seg6_min,
phba->ktime_seg6_max);
len += snprintf(buf + len, PAGE_SIZE-len,
@@ -1004,8 +1004,8 @@ lpfc_debugfs_nvmektime_data(struct lpfc_vport *vport, char *buf, int size)
"-to- Firmware WQ doorbell: status\n");
len += snprintf(buf + len, PAGE_SIZE-len,
"avg:%08lld min:%08lld max %08lld\n",
- phba->ktime_seg7_total /
- phba->ktime_status_samples,
+ div_u64(phba->ktime_seg7_total,
+ phba->ktime_status_samples),
phba->ktime_seg7_min,
phba->ktime_seg7_max);
len += snprintf(buf + len, PAGE_SIZE-len,
@@ -1013,8 +1013,8 @@ lpfc_debugfs_nvmektime_data(struct lpfc_vport *vport, char *buf, int size)
" -to- MSI-X ISR for status cmpl\n");
len += snprintf(buf + len, PAGE_SIZE-len,
"avg:%08lld min:%08lld max %08lld\n",
- phba->ktime_seg8_total /
- phba->ktime_status_samples,
+ div_u64(phba->ktime_seg8_total,
+ phba->ktime_status_samples),
phba->ktime_seg8_min,
phba->ktime_seg8_max);
len += snprintf(buf + len, PAGE_SIZE-len,
@@ -1022,8 +1022,8 @@ lpfc_debugfs_nvmektime_data(struct lpfc_vport *vport, char *buf, int size)
"-to- NVME layer passed status done\n");
len += snprintf(buf + len, PAGE_SIZE-len,
"avg:%08lld min:%08lld max %08lld\n",
- phba->ktime_seg9_total /
- phba->ktime_status_samples,
+ div_u64(phba->ktime_seg9_total,
+ phba->ktime_status_samples),
phba->ktime_seg9_min,
phba->ktime_seg9_max);
len += snprintf(buf + len, PAGE_SIZE-len,
@@ -1031,8 +1031,8 @@ lpfc_debugfs_nvmektime_data(struct lpfc_vport *vport, char *buf, int size)
"cmd completed on wire\n");
len += snprintf(buf + len, PAGE_SIZE-len,
"avg:%08lld min:%08lld max %08lld\n",
- phba->ktime_seg10_total /
- phba->ktime_status_samples,
+ div_u64(phba->ktime_seg10_total,
+ phba->ktime_status_samples),
phba->ktime_seg10_min,
phba->ktime_seg10_max);
return len;
--
2.9.0

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