From 59936430e6a6acb0ef943e9306506b2e9c2e45a8 Mon Sep 17 00:00:00 2001 From: James Smart Date: Mon, 30 Aug 2021 16:12:43 -0700 Subject: [PATCH] scsi: lpfc: Fix CPU to/from endian warnings introduced by ELS processing The kernel test robot reported the following sparse warning: ".../lpfc_els.c:3984:25: sparse: sparse: cast from restricted __be16" For the error being flagged, using be32_to_cpu() on a be16 data type, it was simple enough. But a review of other elements and warnings were also evaluated. This patch corrected several items in the original patch: - Using be32_to_cpu() on a be16 data type - cpu_to_le32() used on a std uint32_t (CPU) data type. Note: This is a byte array, but stored in LE layout by hardware at 32-bit boundaries. So it possibly needed conversion. - Using cpu_to_le32() on a std uint16_t and assigned to a char typeA - Using le32_to_cpu() on a le16 type - Missing cpu_to_le16() on an assignment Link: https://lore.kernel.org/r/20210830231243.6227-1-jsmart2021@gmail.com Fixes: 9064aeb2df8e ("scsi: lpfc: Add EDC ELS support") Reported-by: kernel test robot Co-developed-by: Justin Tee Signed-off-by: Justin Tee Signed-off-by: James Smart Signed-off-by: Martin K. Petersen --- drivers/scsi/lpfc/lpfc_els.c | 8 ++++---- drivers/scsi/lpfc/lpfc_hw4.h | 2 +- drivers/scsi/lpfc/lpfc_init.c | 16 ++++++++-------- drivers/scsi/lpfc/lpfc_sli.c | 5 +++-- 4 files changed, 16 insertions(+), 15 deletions(-) diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c index 1254a575fd47..f3fc79b99165 100644 --- a/drivers/scsi/lpfc/lpfc_els.c +++ b/drivers/scsi/lpfc/lpfc_els.c @@ -4015,11 +4015,11 @@ lpfc_cmpl_els_edc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, be32_to_cpu(pcgd->desc_tag), be32_to_cpu(pcgd->desc_len), be32_to_cpu(pcgd->xmt_signal_capability), - be32_to_cpu(pcgd->xmt_signal_frequency.count), - be32_to_cpu(pcgd->xmt_signal_frequency.units), + be16_to_cpu(pcgd->xmt_signal_frequency.count), + be16_to_cpu(pcgd->xmt_signal_frequency.units), be32_to_cpu(pcgd->rcv_signal_capability), - be32_to_cpu(pcgd->rcv_signal_frequency.count), - be32_to_cpu(pcgd->rcv_signal_frequency.units)); + be16_to_cpu(pcgd->rcv_signal_frequency.count), + be16_to_cpu(pcgd->rcv_signal_frequency.units)); /* Compare driver and Fport capabilities and choose * least common. diff --git a/drivers/scsi/lpfc/lpfc_hw4.h b/drivers/scsi/lpfc/lpfc_hw4.h index 79a4872c2edb..7359505e6041 100644 --- a/drivers/scsi/lpfc/lpfc_hw4.h +++ b/drivers/scsi/lpfc/lpfc_hw4.h @@ -1167,7 +1167,7 @@ struct lpfc_mbx_read_object { /* Version 0 */ #define lpfc_mbx_rd_object_rlen_MASK 0x00FFFFFF #define lpfc_mbx_rd_object_rlen_WORD word0 uint32_t rd_object_offset; - uint32_t rd_object_name[LPFC_MBX_OBJECT_NAME_LEN_DW]; + __le32 rd_object_name[LPFC_MBX_OBJECT_NAME_LEN_DW]; #define LPFC_OBJ_NAME_SZ 104 /* 26 x sizeof(uint32_t) is 104. */ uint32_t rd_object_cnt; struct lpfc_mbx_host_buf rd_object_hbuf[4]; diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index 0ec322f0e3cb..597e5a1ef060 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -5518,7 +5518,7 @@ lpfc_cgn_update_stat(struct lpfc_hba *phba, uint32_t dtag) if (phba->cgn_fpin_frequency && phba->cgn_fpin_frequency != LPFC_FPIN_INIT_FREQ) { value = LPFC_CGN_TIMER_TO_MIN / phba->cgn_fpin_frequency; - cp->cgn_stat_npm = cpu_to_le32(value); + cp->cgn_stat_npm = value; } value = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ, LPFC_CGN_CRC32_SEED); @@ -5547,9 +5547,9 @@ lpfc_cgn_save_evt_cnt(struct lpfc_hba *phba) uint32_t mbps; uint32_t dvalue, wvalue, lvalue, avalue; uint64_t latsum; - uint16_t *ptr; - uint32_t *lptr; - uint16_t *mptr; + __le16 *ptr; + __le32 *lptr; + __le16 *mptr; /* Make sure we have a congestion info buffer */ if (!phba->cgn_i) @@ -5570,7 +5570,7 @@ lpfc_cgn_save_evt_cnt(struct lpfc_hba *phba) if (phba->cgn_fpin_frequency && phba->cgn_fpin_frequency != LPFC_FPIN_INIT_FREQ) { value = LPFC_CGN_TIMER_TO_MIN / phba->cgn_fpin_frequency; - cp->cgn_stat_npm = cpu_to_le32(value); + cp->cgn_stat_npm = value; } /* Read and clear the latency counters for this minute */ @@ -5753,7 +5753,7 @@ lpfc_cgn_save_evt_cnt(struct lpfc_hba *phba) dvalue += le32_to_cpu(cp->cgn_drvr_hr[i]); wvalue += le32_to_cpu(cp->cgn_warn_hr[i]); lvalue += le32_to_cpu(cp->cgn_latency_hr[i]); - mbps += le32_to_cpu(cp->cgn_bw_hr[i]); + mbps += le16_to_cpu(cp->cgn_bw_hr[i]); avalue += le32_to_cpu(cp->cgn_alarm_hr[i]); } if (lvalue) /* Avg of latency averages */ @@ -13411,8 +13411,8 @@ lpfc_init_congestion_buf(struct lpfc_hba *phba) /* last used Index initialized to 0xff already */ - cp->cgn_warn_freq = LPFC_FPIN_INIT_FREQ; - cp->cgn_alarm_freq = LPFC_FPIN_INIT_FREQ; + cp->cgn_warn_freq = cpu_to_le16(LPFC_FPIN_INIT_FREQ); + cp->cgn_alarm_freq = cpu_to_le16(LPFC_FPIN_INIT_FREQ); crc = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ, LPFC_CGN_CRC32_SEED); cp->cgn_info_crc = cpu_to_le32(crc); diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index ffd8a140638c..78ce38d7251c 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -22090,6 +22090,7 @@ lpfc_read_object(struct lpfc_hba *phba, char *rdobject, uint32_t *datap, uint32_t shdr_status, shdr_add_status; union lpfc_sli4_cfg_shdr *shdr; struct lpfc_dmabuf *pcmd; + u32 rd_object_name[LPFC_MBX_OBJECT_NAME_LEN_DW] = {0}; /* sanity check on queue memory */ if (!datap) @@ -22113,10 +22114,10 @@ lpfc_read_object(struct lpfc_hba *phba, char *rdobject, uint32_t *datap, memset((void *)read_object->u.request.rd_object_name, 0, LPFC_OBJ_NAME_SZ); - sprintf((uint8_t *)read_object->u.request.rd_object_name, rdobject); + scnprintf((char *)rd_object_name, sizeof(rd_object_name), rdobject); for (j = 0; j < strlen(rdobject); j++) read_object->u.request.rd_object_name[j] = - cpu_to_le32(read_object->u.request.rd_object_name[j]); + cpu_to_le32(rd_object_name[j]); pcmd = kmalloc(sizeof(*pcmd), GFP_KERNEL); if (pcmd) -- GitLab